
diff -r 8939b8fd8603 -r 069d525f8f1d CookBook/document/lineno.sty
--- a/CookBook/document/lineno.sty	Wed Mar 18 23:52:51 2009 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,3484 +0,0 @@
-                                \iffalse; awk '/S[H]ELL1/' lineno.sty|sh;exit; 
-                                     ... see bottom for .tex documentation ... 
-
-Macro file lineno.sty for LaTeX: attach line numbers, refer to them. 
-                                                                           \fi 
-\def\fileversion{v4.41} \def\filedate{2005/11/02}                     %VERSION
-
-%%% Copyright 1995--2003 Stephan I. B"ottcher <boettcher@physik.uni-kiel.de>; 
-%%% Copyright 2002--2005 Uwe L"uck, http://www.contact-ednotes.sty.de.vu 
-%%%                      for version 4 and code from former Ednotes bundle 
-%%%                      --author-maintained. 
-%%% 
-%%% This file can be redistributed and/or modified under 
-%%% the terms of the LaTeX Project Public License; either 
-%%% version 1.3a of the License, or any later version.
-%%% The latest version of this license is in
-%%%     http://www.latex-project.org/lppl.txt
-%%% We did our best to help you, but there is NO WARRANTY. 
-% 
-%%% $Id: lineno.sty,v 1.1 2006/02/25 18:18:12 wenzelm Exp $ %% was v4.00.
-%                                                      \title{\texttt{\itshape 
-%%                                       %% (UL 2004/10/09:) Italic TT is evil
-%%                                       %% ... or nice front page layout!? 
-%%
-%         lineno.sty \ \fileversion\ \filedate 
-%                                                               \unskip}\\\ \\
-%          A \LaTeX\ package  to attach 
-% \\        line numbers to paragraphs
-%                                                            \unskip}\author{% 
-%              Stephan I. B\"ottcher 
-%  \\          Uwe L\"uck 
-%                                                              \unskip}\date{% 
-%            boettcher@physik.uni-kiel.de 
-%  \\        http://contact-ednotes.sty.de.vu 
-%% \\        stephan@nevis.columbia.edu
-%% \\        Stephan.Boettcher@cern.ch                     
-%                                                                          \\}
-%
-%                                      \documentclass[a4paper,12pt]{article}%D
-%                                                        \usepackage{lineno}%D 
-%%                                                              %% (New v4.00)
-%                                                     \catcode`\_\active\let_~ 
-%%                                               %% Beware math!? (/New v4.00) 
-%                                                                \def~{\verb~} 
-%                                                               \let\lessthan< 
-%                                                           \catcode`\<\active
-%                                   \def<#1>{$\langle${\itshape#1}\/$\rangle$}
-%                                                           \catcode`\|\active
-%%                                        (New v4.1: \tt star; in box anyway.) 
-%                                                  \def|#1{\ttfamily\string#1}
-%%                                               \def|#1{{\ttfamily\string#1}}
-%%                                                                 (/New v4.1) 
-%                                                        \newenvironment{code}
-%                                                     {\par\runninglinenumbers
-%                                                       \modulolinenumbers[1]%
-%                                                           \linenumbersep.3em
-%                                                                \footnotesize
-%                                                          \def\linenumberfont
-%                                                  {\normalfont\tiny\itshape}}
-%                                                                           {} 
-%%                                                              %% (New v4.00)
-%                                           {\makeatletter \gdef\scs#1{\texttt
-%                                                {\protect\@backslashchar#1}}}
-%                                                  \def\old{\par\footnotesize}
-%%                                                             %% (/New v4.00)
-%%                                                               %% (New v4.1) 
-%                                                          {\catcode`\/\active
-%                                     \gdef\path{\begingroup\catcode`\/\active
-%                                                          \let/\slash\dopath}
-%                                 \gdef\dopath#1{\slash\unpenalty#1\endgroup}}
-%%                                                              %% (/New v4.1)
-%
-%                                                           \begin{document}%D
-%%                                                         \DocInput{lineno}%D
-%                                                         \pagewiselinenumbers
-%                                                                   \maketitle 
-%                                                         \pagestyle{headings}
-%                                                             \tableofcontents
-%                                                                      \sloppy
-% 
-%%                                      %% New v4.00: `...section{%' + \unskip 
-%                                                                   \section{%
-%                    Introductions 
-%%                                                           %% New v4.00: `s'
-%                                                                     \unskip}
-% 
-% (New v4.00)           Parts of former first section 
-% have been rendered separate subsections for package 
-% version_v4.00.                         (/New v4.00) 
-% 
-%                                                                \subsection{% 
-%               Introduction to versions $\textrm{v}\lessthan4$
-%                                                                     \unskip} 
-% 
-% This package provides line numbers on paragraphs.
-% After \TeX\ has broken a paragraph into lines there will
-% be line numbers attached to them, with the possibility to
-% make references  through the \LaTeX\ ~\ref~, ~\pageref~
-% cross reference mechanism.  This includes four issues:
-%                                                              \begin{itemize}
-% \item   attach a line number on each line,
-% \item   create references to a line number,
-% \item   control line numbering mode,
-% \item   count the lines and print the numbers.
-%                                                                \end{itemize}
-% The first two points are implemented through patches to
-% the output routine.  The third by redefining ~\par~, ~\@par~
-% and ~\@@par~.  The counting is easy, as long as you want
-% the line numbers run through the text.  If they shall
-% start over at the top of each page, the aux-file as well
-% as \TeX s memory have to carry a load for each counted line.
-%
-% I wrote this package for my wife Petra, who needs it for
-% transcriptions of interviews.  This allows her to
-% precisely refer to passages in the text.  It works well
-% together with ~\marginpar~s, but not too well with displaymath.
-% ~\footnote~s are a problem, especially when they
-% are split, but we may get there. 
-% (New v4.00 UL) Version v4.00 overcomes the problem, I believe. 
-% (/UL /New v4.00)
-%
-% lineno.sty works
-% surprisingly well with other packages, for
-% example, ~wrapfig.sty~.  So please try if it
-% works with whatever you need, and if it does,
-% please tell me, and if it does not, tell me as
-% well, so I can try to fix it.
-%
-%                                                                \subsection{%
-%               Introduction to versions v4.00ff. (UL) 
-%                                                                     \unskip}
-% 
-% ~lineno.sty~ has been maintained by Stephan until version_v3.14.
-% From version_v4.00 onwards, maintenance is shifting towards 
-% Uwe L\"uck (UL), who is the author of v4\dots code and of v4\dots 
-% changes in documentation. This came about as follows. 
-% 
-% Since late 2002, Christian Tapp and Uwe L\"uck have employed 
-% ~lineno.sty~ for their ~ednotes.sty~, a package supporting 
-% critical editions---cf.
-%                                                                  \[\mbox{\tt 
-%     http://ednotes.sty.de.vu 
-%                                                                   \unskip}\]
-% ---while you find ~ednotes.sty~ and surrounding files in 
-% CTAN folder \path{macros/latex/contrib/ednotes}.
-% 
-% Soon, some weaknesses of ~lineno.sty~ showed up, mainly since 
-% Christian's critical editions (using ~ednotes.sty~) needed lots 
-% of ~\linelabel~s and footnotes. (These weaknesses are due to 
-% weaknesses of \LaTeX's ~\marginpar~ mechanism that Stephan 
-% used for ~\linelabel~.) So we changed some ~lineno.sty~ 
-% definitions in some extra files, which moreover offered new 
-% features. We sent these files to Stephan, hoping he would take 
-% the changes into ~lineno.sty~. However, he was too short of time. 
-% 
-% Writing a TUGboat article on Ednotes in 2004, we hoped to 
-% reduce the number of files in the Ednotes bundle and so asked 
-% Stephan again. Now he generously offered maintenance to me, so 
-% I could execute the changes on my own. 
-% 
-% The improvements are as follows: 
-%                                                         \begin{itemize}\item 
-% [(i)]   Footnotes placement approaches intentions better 
-% (footnotes formerly liked to pile up at late pages). 
-%                                                                        \item 
-% [(ii)]  The number of ~\linelabel~s in one paragraph is no longer 
-% limited to 18. 
-%                                                                        \item 
-% [(iii)] ~\pagebreak~, ~\nopagebreak~, ~\vspace~, and the star 
-% and optional versions of ~\\~ work as one would expect 
-% (section_\ref{s:MVadj}).                                   %% Added for v4.1
-%                                                                        \item 
-% [(iv)]  A command is offered which chooses the first line number 
-% to be printed in the margin 
-% (subsection_\ref{ss:Mod}).                                 %% Added for v4.1
-%                                                                        \item 
-% [(v)]   (New v4.1) \LaTeX\ tabular environments (optionally) 
-% get line numbers as well, and you can refer to them in the 
-% usual automatic way. (It may be considered a shortcoming that, 
-% precisely, \emph{rows} are numbered, not lines.---See 
-% subsection_\ref{ss:Tab}.) 
-%                                                                        \item 
-% [(vi)]  We are moving towards referring to math items 
-% (subsection_\ref{ss:MathRef} and the hooks in 
-% subsection_\ref{ss:LL}). 
-% (/New v4.1) 
-%                                                                 \end{itemize}
-% (Thanks to Stephan for making this possible!)
-% 
-%% Unpublish: 
-%% You may trace the earlier developments of these changes by 
-%% requesting our files ~linenox0.sty~, ~linenox1.sty~, and 
-%% ~lnopatch.sty~. Most of our changes have been in ~linenox0.sty~. 
-%% Our ~linenox1.sty~ has extended ~linenox0.sty~ for one single 
-%% purpose in a not very stable way. 
-%%% (See ~\linenumberpar~ below). 
-%% ~lnopatch.sty~ has done the first line number thing referred 
-%% to in case_(iv) up to now. 
-%% (New v4.1) 
-%% Case_(v) earlier was provided by our ~edtab02.sty~---now 
-%% called ~edtable.sty~. 
-%% (/New v4.1) 
-% 
-% Ednotes moreover profits from Stephan's offer with regard 
-% to the documentation of our code which yielded these 
-% improvements formerly. This documentation now becomes 
-% printable, being part of the ~lineno.sty~ documentation. 
-% 
-% Of course, Stephan's previous ~lineno.sty~ versions were a great 
-% and ingenious work and exhibit greatest \TeX pertise. I never 
-% could have done this. I learnt a lot in studying the code when 
-% Christian pointed out strange output results and error 
-% messages, and there are still large portions of ~lineno.sty~ 
-% which I don't understand (consider only pagewise numbering of 
-% lines). Fortunately, Stephan has offered future help if 
-% needed.---My code for attaching line numbers to \emph{tabular 
-% environments} (as mentioned above, now still in 
-% ~edtable.sty~) %%                                                      %% TODO
-% developed from macros which Stephan and Christian experimented 
-% with in December 2002. Stephan built the basics. 
-% (However, I then became too proud to follow his advice only to 
-% use and modify ~longtable.sty~.)
-% 
-% There are some issues concerning use of counters on which I 
-% don't agree with Stephan and where I would like to change the 
-% code if ~lineno.sty~ is ``mine'' as Stephan offered. However, 
-% Stephan is afraid of compatibility problems from which, in 
-% particular, his wife could suffer in the near future. So he 
-% demanded that I change as little as possible for my first 
-% version. Instead of executing changes that I plan I just offer 
-% my opinions at the single occasions. I hope to get in touch 
-% this way with users who consider subtle features vital which I 
-% consider strange. 
-% 
-% On the other hand, the sections on improvements of the 
-% implementation have been blown up very much and may be tiring 
-% and litte understandable for mere \emph{users}. These users 
-% may profit from the present presentation just by jumping to 
-% sections_\ref{s:Opts} and_\ref{s:UserCmds}. There is a user's 
-% guide ulineno.tex which may be even more helpful, but it has 
-% not been updated for a while.                                        %% TODO
-% 
-%                                                                \subsection{%
-%               Availability 
-%                                                                     \unskip}
-% 
-% In case you have found the present file otherwise than from 
-% CTAN: A recent version and documentation of this package 
-% should be available from CTAN folder 
-% \path{macros/latex/contrib/lineno}.
-% Or mail to one of the addresses at top of file. 
-% 
-%                                                                \subsection{% 
-%               Introductory code
-%                                                                     \unskip}
-% 
-% This style option is written for \LaTeXe, November 1994 or later,
-% since we need the ~\protected@write~ macro. 
-% 
-% (New v4.00)               And we use ~\newcommand*~ for 
-% controlling length of user macro arguments, which has been 
-% available since December 1994. 
-%% 
-
-\NeedsTeXFormat{LaTeX2e}[1994/12/01] 
-%%                                                                [1994/11/04] 
-\ProvidesPackage{lineno} 
-  [\filedate\space line numbers on paragraphs \fileversion] 
-% (/New v4.00) 
-%% 
-%% History of versions: 
-%% v1.00 1995/03/31  SIB: first release for Petra's interview transcriptions
-%% v1.01 1995/10/28  SIB: added ~pagewise~ mode
-%% v1.02 1995/11/15  SIB: added ~modulo~ option  
-%% v1.03 1995/12/05  SIB: pagewise: try to reduce the hash-size requirements
-%% v2.00 1995/12/06  SIB:   .. it works, new user interface
-%% v2.01 1996/09/17  SIB: put into CVS
-%% v2.02 1997/03/17  SIB: add: \@reinserts, for footnotes
-%% v2.04 1998/03/09  SIB: add: linenomath environment
-%% v2.05 1998/04/26  SIB: add: prevgraf test
-%% v2.06 1999/03/02  SIB: LPPL added
-%% v3.00 1999/06/11  SiB: include the extension in the main file
-%% v3.01 1999/08/28  SiB: \@reinserts -> \holdinginserts
-%% v3.02 2000/03/10  SiB: \@LN@output
-%% v3.03 2000/07/01  SiB: \@LN@ExtraLabelItems, hyperref
-%% v3.04 2000/12/17  SiB: longtable compatibility.
-%% v3.05 2001/01/02  SiB: [fleqn] detection. 
-%% v3.05a 2001/01/04 SiB: [fleqn] detection reverted for eqnarray. 
-%% v3.06 2001/01/17  SiB: [twocolumn] mode support.
-%% v3.07 2001/07/30  SiB: [hyperref] option obsoleted.
-%% v3.08 2001/08/02  SiB: linenomath wrapping for \[ \]
-%% v3.08a 2001/08/04 SiB: linenomath wrapping for \[ \] fixed
-%% v3.08b 2002/01/27 SiB: enquotation typo fix
-%% v3.09 2003/01/14  SIB: hyperref detection fix
-%% v3.10 2003/04/15  FMi: \MakeLineNo fix for deep boxes
-%% v3.10a 2003/11/12  Uwe L�ck: \lineref typo fix
-%% v4.00 2004/09/02  UL:  included linenox0, linenox1, lnopatch code with 
-%%                        documentation, usually indicated by `New v4.00'; 
-%%                        discussions of old code, indicated by `UL'; 
-%%                        LPPL v.1 ->  LPPL v1.3, `program' -> `file'; 
-%%                        first lines with \filedate and \fileversion, 
-%%                        according nawk lines; `November 1994 or later', 
-%%                        some earlier documentation typos (including a few 
-%%                        bad minus signs), { -> {% and } -> \unskip} at 
-%%                        line ends (so, e.g., alignment in TOC works); \scs. 
-%%       2004/09/03  UL:  removed everything which indicated that the 
-%%                        present file were named `lineno4.sty'. 
-%% v4.1  2004/09/19  UL:  Inserted Stephan's identification line, removed 
-%%                        some TODOs and remarks from v4.00. 
-%%       2004/10/04  UL:  Added acknowledgement for Daniel Doherty; 
-%%                        `(New v4.00)' with [|\firstlinenumber]; changed 
-%%                        TODOs; Refining -> Redefining (\vadjust). 
-%%       2004/10/05  UL:  ednmath0 -> mathrefs; \catcode`\~ -> \active;
-%%                        \path; refined section on options `mathrefs'; 
-%%                        changes in introduction. 
-%%       2004/10/06  UL:  Changed/removed TODOs, e.g., for edtable.sty. 
-%%       2004/10/11  UL:  Reminders: linenox0/1/lnopatch.sty obsolete; 
-%%                        \tt star in list of commands.
-%%       2004/10/12  UL:  Corrected blank lines in lineno.tex. 
-%%       2004/10/19  UL:  Fixed minor typos; remark on \if@LN@edtable. 
-%% v4.1a 2004/11/07  UL:  LPPL v1.3a. 
-%% v4.1b 2004/11/13  UL:  Comment on \outputpenalty values. 
-%% v4.1c 2005/01/10  UL:  Contact via http. 
-%% v4.11 2005/02/20  UL:  Error message with \linelabel when not numbering. 
-%%       2005/03/07  UL:  Removed \linelabel from ss:Tab heading, consider 
-%%                        marginal line numbers as well, revised ss:Tab. 
-%%                        Added a few lines on missing explanations to 
-%%                        s:UserCmds. Corrected some code alignments. 
-%%       2005/03/08  UL:  Require recent edtable.sty. 
-%%
-
-%% v4.2  2005/03/21  UL:  "Physical page" counter works with \include. 
-%%       2005/04/17  UL:  Raised options section above extensions section 
-%%                        (v4.00 disabled `displaymath' option); 
-%%                        third arg for \@ifundefined{mathindent}; 
-%%                        "bunch of options"; 
-%%       2005/04/24  UL:  compatibility with tamefloats; vplref.sty. 
-%%       2005/04/25  UL:  \number -> \the; wondered -> $$; subsec. appbas; 
-%%                        CrtlLN sec -> subsec.; \newcommand* wherever ...; 
-%%                        doc. on `other output routines' and `addpageno' 
-%%                        (this changed from `varioref'). 
-%%       2005/04/27  UL:  =1\relax -> =\@ne, 0\relax ..., \hb@xt@, 
-%%                        \ifx\@@par\@@@par -> \ifLineNumbers, typos, 
-%%                        \pagestyle{headings}, LaTeX -> \LaTeX. 
-%% v4.21 2005/04/28  UL:  linenomath section: removed wrong \else's, 
-%%                        \holding...: \thr@@, \@LN@outer@holdins, \global. 
-%% v4.22 2005/05/01  UL:  \unvbox\@outputbox; \@LN@col without #1, 
-%%       2005/05/08  UL:  global/local \internall..., \resetl... global, 
-%%                        shortened discussions of this and of \newcounter. 
-%%       2005/05/09  UL:  corr.: doc. typo, version history, bad lines; 
-%%                        percent; \chardef for modulo, 
-%%                        \value{firstlinenumber}. 
-%% v4.3  2005/05/10  UL:  \@backslashchar -> \char`\\ in \scs. 
-%%       2005/05/11  UL:  \linenumbers sets ...outer@holdins; tidied up 
-%%                        documentation regarding earlier versions. 
-%%       2005/05/12  UL:  `linenomath' without spurious number above; 
-%%                        `displaymath' default; edmac homepage -> 
-%%                        ednotes.sty.de.vu, \endlinenomath without 
-%%                        numbers: no change of \holdinginserts; 
-%%                        \linelabel doesn't go to .aux or mark, 
-%%                        hyperref detected; undone 2005/05/10 (bad mark). 
-%%       2005/05/13  UL:  Reworked hyperref detection (new subsec.). 
-%%       2005/05/15  UL:  More typo fixes, corrected terrible confusions in 
-%%                        the discussion (v4.22/v4.3) of \new/\stepcounter; 
-%%                        new subsec. in `Line number ...'; another 
-%%                        implementation of `hyperref' detection. 
-%%       2005/05/16  UL:  Final minor changes. 
-%% v4.31b    /06/14  UL:  Extended explanation of \firstlinenumbers 
-%%                        and package options; \@LN@ifgreat@critical; 
-%%                        \modulolinenumbers*. Sent to Ednotes.news only.
-%% v4.31 2005/06/15  UL:  \modulolinenumbers* with \firstlinenumber{1}; 
-%%                        " -> ``/''; more doc. on \firstlinenumber .
-%%       2005/06/20  UL:  Typo fix. 
-%%       2005/10/01  UL:  Warning about \mod...* with pagewise mode. 
-%% v4.31a    /10/02  UL:  Minor changes of appearance of doc., e.g., 
-%%                        \[ for $$. 
-%% v4.32b    /10/15  UL:  Support for \addvspace; removed comments that
-%%                        had been invisible already for some time; 
-%%                        made clear with which environments the 
-%%                        linenomath environment is not needed. 
-%% v4.32ab   /10/15  UL:  Observe \if@nobreak with support for \addvspace. 
-%% v4.32 2005/10/17  UL:  Just made it official and sent it to CTAN. 
-%% v4.33b    /10/23  UL:  \if@nobreak\nobreak\fi -> \nobreak . 
-%% v4.33ab   /10/24  UL:  \LineNoLaTeXOutput without \@tempswafalse; 
-%%                        undid v4.22: \[unv]box\@outputbox (space is OK, 
-%%                        \unvbox pushes short columns down); \@LN@kern@z@ . 
-%% v4.4b 2005/10/24  UL:  Another tidying-up of the discussion of 
-%%                        \stepcounter{linenumber}; \@LN@screenoff@pen 
-%%                        replaces \@LN@kern@z@, \@LN@depthbox . 
-%% v4.4  2005/10/27  UL:  Just made official for CTAN. 
-%% v4.4a 2005/10/29  UL:  Undid change of discussion of 
-%%                        \stepcounter{linenumber} (confusion again). 
-%% v4.41 2005/11/02  UL:  Raised \CheckCommand*. 
-%% 
-%% Acknowledgements:
-%% v3.06:  Donald Arseneau, pointed to mparhack.sty.
-%% v3.07+: Frank Mittelbach, points out inconsistencies in the
-%%         user interface.
-%% v3.10:  Frank Mittelbach \MakeLineNo fix for deep boxes
-%% v4.00:  Daniel Doherty points out clash of \pagewise... with resetting 
-%%         page number. 
-%% v4.21:  Much testing work by Erik Luijten. 
-%% v4.3:   `displaymath' default by Erik Luijten's suggestion. 
-%% v4.31:  \modulolinenumbers* is an idea of Hillel Chayim Yisraeli's. 
-%% v4.32:  Support for \addvspace due to Saravanan M.'s observation. 
-%% v4.33:  Different support for \addvspace due to bug reports by 
-%%         Saravanan M.'s and David Josef Dev. 
-%% v4.4:   David Josef Dev points out that \kern\z@ after a paragraph 
-%%         tends to place its final baseline wrongly. 
-%
-%
-%                                                                   \section{%
-%               Put the line numbers to the lines
-%                                                                     \unskip}
-% 
-% (New v4.00)                    This section contained the most 
-% basic package code previously. For various purposes of 
-% version_4\dots, much of these basics have been to be modified. 
-% Much of my (UL's) reasoning on these modifications has been to 
-% be reported. Sorry, the present section has been blown up 
-% awfully thus and contains ramifications that may be difficult 
-% to trace. We add some ~\subsection~ commands in order to cope 
-% with the new situation. (/New v4.00) 
-% 
-%                                                                \subsection{% 
-%               Basic code of \texttt{lineno.sty} \scs{output}
-%                                                    \unskip}\label{ss:output} 
-% 
-% The line numbers have to be attached by the output
-% routine.  We simply set the ~\interlinepenalty~ to $-100000$.
-% The output routine will be called after each line in the
-% paragraph,  except the last,  where we trigger by ~\par~.
-% The ~\linenopenalty~ is small enough to compensate a bunch of
-% penalties (e.g., with ~\samepage~).
-%
-% (New v3.04)            Longtable uses 
-% ~\penalty~$-30000$.  The lineno penalty range was 
-% shrunk to $-188000 \dots -32000$.  (/New v3.04)
-% (New v4.00) New values are listed below (11111f.). (/New v4.00) 
-
-\newcount\linenopenalty\linenopenalty=-100000
-
-%% TODO v4.4+: 
-% (UL)                              Hm. It is never needed below 
-% that this is a counter. ~\def\linenopenalty{-100000\relax}~ 
-% would do. (I guess this consumes more memory, but it 
-% is more important to save counters than to save memory.) 
-% I was frightened by ~-\linenopenalty~ below, but indeed 
-% \TeX\ interprets the string ~--100000~ as 100000. 
-% Has any user or extension package writer ever called 
-% ~\linenopenalty=xxx~, or could I really change this?---The 
-% counter is somewhat faster than the macro. Together with the 
-% compatibility question this seems to support keeping the 
-% counter. (???) 
-%% Note that Stephan chose ~\mathchardef~ below, 
-%% so his choice above seems to have been deliberate. 
-%% <- no point, \mathchardef token is fast. 
-% (/UL) 
-
-\mathchardef\linenopenaltypar=32000
-
-% So let's make a hook to ~\output~,  the direct way. The \LaTeX\ 
-% macro ~\@reinserts~ puts the footnotes back on the page.
-%
-% (New v3.01)                ~\@reinserts~ badly
-% screws up split footnotes.  The bottom part is
-% still on the recent contributions list, and the
-% top part will be put back there after the bottom
-% part. Thus, since lineno.sty does not play well
-% with ~\inserts~ anyway, we can safely experiment
-% with ~\holdinginserts~, without making things
-% much worse.    
-%
-% Or that's what I thought, but:  Just activating
-% ~\holdinginserts~ while doing the ~\par~ will
-% not do the trick:  The ~\output~ routine may be
-% called for a real page break before all line
-% numbers are done, and how can we get control
-% over ~\holdinginserts~ at that point?
-%
-% Let's try this:  When the ~\output~ routine is
-% run with ~\holdinginserts=3~ for a real page
-% break, then we reset ~\holdinginserts~ and
-% restart ~\output~.
-%
-% Then, again, how do we keep the remaining
-% ~\inserts~ while doing further line numbers? 
-%
-% If we find ~\holdinginserts~=$-3$ we activate it again 
-% after doing ~\output~.             (/New v3.01)
-%
-% (New v3.02)                    To work with
-% multicol.sty, the original output routine is now
-% called indirectly, instead of being replaced.
-% When multicol.sty changes ~\output~, it is a
-% toks register, not the real thing. (/New v3.02)
-% 
-% (New v4.00)               Two further complications are added. 
-%%
-%% TODO v4.3+: Or three, ~\@nobreakfalse~ after ~\MakeLineNo~ 
-%% for getting rid of ~\@LN@nopagebreak~. 
-%                                                         \begin{itemize}\item
-% [(i)]  Problems with footnotes formerly resulted from 
-% \LaTeX's ~\@reinserts~ in ~\@specialoutput~ which Stephan's 
-% ~\linelabel~ called via the ~\marginpar~ mechanism. 
-%                                                                        \item
-% [(ii)] \LaTeX\ commands using ~\vadjust~ formerly didn't work 
-% as one would have hoped. The problem is as follows: 
-% Printing the line number results from 
-% a box that the output routine inserts at the place of the 
-% ~\interlinepenalty~. ~\vadjust~ items appear \emph{above} the 
-% ~\interlinepenalty~ (\TeX book p._105). So ~\pagebreak~, e.g., 
-% formerly sent the line number to the next page, while the 
-% penalty from ~\nopagebreak~ could not tie the following line, 
-% since it was screened off by the line number box.---Our trick 
-% is putting the ~\vadjust~ items into a list macro from which 
-% the output routine transfers them into the vertical list, 
-% below the line number box. 
-%                                                                \end{itemize}
-% In this case_(ii), like in case_(i), footnotes would suffer 
-% if ~\holdinginserts~ were non-positive. Indeed, in both 
-% cases_(i) and_(ii) we tackle the footnote problem by extending 
-% that part of Stephan's output routine that is active when 
-% ~\holdinginserts~ is positive. This extension writes the line 
-% number ~\newlabel~ to the .aux file (which was formerly done 
-% under $~\holdinginserts~=-3$) and handles the ~\vadjust~ 
-% items.---To trigger ~\output~ and its ~\linelabel~ or, resp., 
-% ~\vadjust~ part, the list of signal penalties started 
-% immediately before is increased here (first for ~\linelabel~, 
-% second for postponed ~\vadjust~ items): 
-
-\mathchardef\@Mllbcodepen=11111 
-\mathchardef\@Mppvacodepen=11112 
-
-% (/New v4.00) (New v4.2) David Kastrup urges to use a private 
-% name instead of ~\the\output~ (LaTeX-L-list). Otherwise an 
-% ~\output~ routine loaded later and using ~\newtoks\output~ 
-% again may get lost entirely. So we change use of ~\@LN@output~, 
-% using it for the former purpose. Reference to what appeared 
-% with the name of ~\output~ here lasts for a few lines and then 
-% is given away. 
-
-\let\@tempa\output
-\newtoks\output
-\let\@LN@output\output
-\output=\expandafter{\the\@tempa}
-
-% Now we add two cases to Stephan's output routine. (New v4.00)
-
-\@tempa={%
-% (/New 4.2)
-            \LineNoTest
-            \if@tempswa
-%% 
-%% (UL) Learnt that even in def.s blank line means ~\par~. 
-%% to leave visual space in present file with having a
-%% blank line neither in present nor in .tex file, 
-%% use double comment mark (`%%'). (/UL) 
-%% 
-% (New v4.00)
-% We insert recognition of waiting ~\linelabel~ items--- 
-%% 
-              \ifnum\outputpenalty=-\@Mllbcodepen 
-                \WriteLineNo 
-%%
-% ---and of waiting ~\vadjust~ items: 
-%% 
-              \else 
-                \ifnum\outputpenalty=-\@Mppvacodepen 
-                  \PassVadjustList 
-                \else 
-%% 
-%% Now we give control back to Stephan. 
-% (/New v4.00) (New v4.2) Outsource ``Standard'' output 
-% ---which occurs so rarely---to subsection_\ref{ss:LLO}: 
-%% 
-                  \LineNoLaTeXOutput 
-% (/New v4.2) (New v4.00) 
-% Two new ~\fi~s for the ~\linelabel~ and ~\vadjust~ tests--- 
-%% 
-                \fi 
-              \fi 
-%%
-% ---and the remaining is 
-%%%next three lines are 
-% Stephan's code again: 
-% (/New v4.00) 
-%%
-            \else  
-              \MakeLineNo
-            \fi
-            }
- 
-% (New v4.00)                                  Our new macros 
-% ~\WriteLineNo~ and ~\PassVadjustList~ will be dealt with in 
-% sections_\ref{s:LNref} and_\ref{ss:PVadj}. (/New v4.00) 
-% 
-%                                                                \subsection{%
-%               \scs{LineNoTest}
-%                                                                     \unskip} 
-% 
-% The float mechanism inserts ~\interlinepenalty~s during
-% ~\output~.  So carefully reset it before going on.  Else
-% we get doubled line numbers on every float placed in
-% horizontal mode, e.g, from ~\linelabel~.  
-%
-% Sorry, neither a ~\linelabel~ nor a ~\marginpar~ should
-% insert a penalty, else the following linenumber
-% could go to the next page. Nor should any other
-% float.  So let us suppress the ~\interlinepenalty~ 
-% altogether with the ~\@nobreak~ switch.
-%
-% Since (ltspace.dtx, v1.2p)[1996/07/26], the ~\@nobreaktrue~ does
-% it's job globally.  We need to do it locally here.
-
-\def\LineNoTest{%
-  \let\@@par\@@@par
-  \ifnum\interlinepenalty<-\linenopenaltypar
-     \advance\interlinepenalty-\linenopenalty
-     \@LN@nobreaktrue
-     \fi
-  \@tempswatrue
-  \ifnum\outputpenalty>-\linenopenaltypar\else
-     \ifnum\outputpenalty>-188000\relax
-       \@tempswafalse
-       \fi
-     \fi
-  }
-
-\def\@LN@nobreaktrue{\let\if@nobreak\iftrue} % renamed v4.33
-
-% (UL)                                      I thought here were 
-% another case of the save stack problem explained in \TeX book, 
-% p._301, namely through both local and global changing 
-% ~\if@nobreak~. However, ~\@LN@nobreak~ is called during 
-% ~\@LN@output~ only, while ~\@nobreaktrue~ is called by \LaTeX's 
-% ~\@startsection~ only. The latter never happens during 
-% ~\@LN@output~. So there is no local value of ~\if@nobreak~ on 
-% save stack when ~\@nobreaktrue~ acts, since ~\the\@LN@output~ 
-% (where ~\@LN@output~ is a new name for the original ~\output~) 
-% is executed within a group (\TeX book p._21).
-%%
-%%           2004/09/19 Removed nonsense here according to Stephan 2004/09/04.
-%% 
-% (/UL) 
-%
-%                                                                \subsection{%
-%               Other output routines (v4.2)
-%                                                       \unskip}\label{ss:LLO} 
-% 
-% I had thought of dealing with bad interference of footnotes 
-% (and ~\enlargethispage~) with (real) ~\marginpar~s and floats 
-% \emph{here}. Yet this is done in 
-%                                                                           \[
-%     ~http://~\mbox{[CTAN]}
-%           ~/macros/latex/contrib/tamefloats/tameflts.sty~
-%                                                                           \]
-% now, and I prefer striving for compatibility with the latter. 
-% (See there for expanding on the problem.)
-% This requires returning the special absolute value of 
-% ~\holdinginserts~ that ~lineno.sty~ finds at the end of a newly 
-% typeset paragraph---now done in subsection_\ref{ss:calls}
-% (~\linenumberpar~). 
-% The former ~\LineNoHoldInsertsTest~ has been filled into here. 
-%% ---`3' is replaced by ~\thr@@~ for a while. ~\thr@@~ is 
-%% useful practice since plain \TeX, but Stephan may have been 
-%% wise in suspecting that \LaTeX\ once could forsake ~\thr@@~. 
-%% The same holds for ~\@M=10000~. 
-% Note: when the following code is invoked, we have 
-% ~\if@tempswa~_ =_~\iftrue~. 
-% WARNING: I am still not sure whether the present code is good 
-% for cooperating with other packages that use ~\holdinginserts~. 
-
-\def\LineNoLaTeXOutput{% 
-  \ifnum \holdinginserts=\thr@@   % v4.33 without \@tempswafalse
-    \global\holdinginserts-\thr@@ 
-    \unvbox\@cclv 
-    \ifnum \outputpenalty=\@M \else \penalty\outputpenalty \fi 
-  \else
-    \if@twocolumn \let\@makecol\@LN@makecol \fi
-    \the\@LN@output % finally following David Kastrup's advice. 
-    \ifnum \holdinginserts=-\thr@@ 
-      \global\holdinginserts\thr@@ \fi 
-  \fi
-}
-
-% \textit{More on dealing with output routines from other 
-%         packages:} 
-% Since ~lineno.sty~'s output routine is called at least once 
-% for each output line, I think it should be in \TeX's 
-% original ~\output~, while output routines dealing with 
-% building pages and with floats etc.\ should be filled into 
-% registers addressed by ~\output~ after ~\newtoks\output~. 
-% Therefore                                                  \begin{enumerate}
-%                                                                        \item 
-%   ~tameflts.sty~ should be loaded \emph{after} ~lineno.sty~; 
-%                                                                        \item 
-%   if a class changes ~\output~ (APS journal class revtex4, 
-%   e.g.), ~lineno.sty~ should be loaded by ~\RequirePackage~ 
-%   [here presumably following some options in 
-%   brackets]~{lineno}~ \emph{preceding} ~\documentclass~. 
-%                                                                        \item 
-%   If you actually maintain such a class, please consider 
-%   loading ~lineno.sty~ on some draft option. The bunch of 
-%   lineno's package options may be a problem, but perhaps the 
-%   purpose of your class is offering only very few of lineno's 
-%   options anyway, maybe just one. 
-%                                                              \end{enumerate} 
-% The latter may also be needed with classes that don't follow 
-% David Kastrup's rule on changing ~\output~. 
-% 
-%                                                                \subsection{%
-%               \scs{MakeLineNo}: Actually attach line number 
-%                                                       \unskip}\label{ss:MLN} 
-% 
-% We have to return all the page to the current page, and
-% add a box with the line number, without adding
-% breakpoints, glue or space.  The depth of our line number
-% should be equal to the previous depth of the page, in
-% case the page breaks here,  and the box has to be moved up
-% by that depth.  
-%
-% The ~\interlinepenalty~ comes after the ~\vadjust~ from a
-% ~\linelabel~,  so we increment the line number \emph{after}
-% printing it. The macro ~\makeLineNumber~ produces the
-% text of the line number, see section \ref{appearance}.
-% 
-% (UL)                        I needed a while to understand 
-% the sentence on incrementing. Correctly: writing the 
-% ~\newlabel~ to the .aux file is triggered by the signal 
-% penalty that ~\end@float~ inserts via ~\vadjust~. 
-% However, this could be changed by our new ~\PostponeVadjust~. 
-% After ~\c@linenumber~ has been introduced as a \LaTeX\ 
-% counter, it might be preferable that it behaved like standard 
-% \LaTeX\ counters which are incremented shortly before printing. 
-% But this may be of little practical relevance in this case, 
-% as ~\c@linenumber~ is driven in a very non-standard 
-% way.---However still, this behaviour of ~\c@linenumber~ 
-% generates a problem with our ~edtable.sty~. 
-%% \unskip---Before, 
-%% I thought that Stephan had reported his reasoning incorrectly 
-%% and rather did this because of his ~\resetlinenumber~ which 
-%% initializes ~\c@linenumber~ to 1 instead of 0---the latter is 
-%% usual with \LaTeX\ counters. Cf._additional comment at 
-%% ~\resetlinenumber~. 
-% (/UL). 
-%
-% Finally we put in the natural ~\interlinepenalty~, except
-% after the last line. 
-%
-% (New v3.10) Frank Mittelbach points out that box255 may be 
-% less deep than the last box inside, so he proposes to 
-% measure the page depth with ~\boxmaxdepth=\maxdimen~.
-% (/New v3.10)
-% 
-% (UL, New v4.00)               We also resume the matter of 
-% ~\vadjust~ items that was started in section_\ref{ss:output}. 
-% 
-% \TeX\ puts only nonzero interline 
-% penalties into the vertical list (\TeX book p._105), while 
-% ~lineno.sty~ formerly replaced the signal interline penalty by 
-% something closing with an explicit penalty of the value that 
-% the interline penalty would have without ~lineno.sty~. 
-% This is usually 0. Now, explicit vertical penalties can be 
-% very nasty with respect to ~\nopagebreak~, e.g., a low (even 
-% positive) ~\widowpenalty~ may force a widow where you 
-% explicitly tried to forbid it by ~\nopagebreak~ 
-% (see explanation soon below). 
-% The ~\nopagebreak~ we create here would never work if all 
-% those zero penalties were present.---On 
-% the other hand, we cannot just omit Stephan's zero penalties, 
-% because \TeX\ puts a penalty of 10000 after what ~lineno.sty~ 
-% inserts (\TeX book p._125). This penalty must be overridden 
-% to allow page breaks between ordinary lines. To revive 
-% ~\nopagebreak~, we therefore replace those zero (or low) 
-% penalties by penalties that the user demanded by 
-% ~\nopagebreak~.---This mechanism is not perfect and does not 
-% exactly restore the original \LaTeX\ working of ~\pagebreak~ 
-% and ~\nopagebreak~. Viz., if there are several vertical 
-% penalties after a line which were produced by closely sitting 
-% ~\[no]pagebreak~s, without ~lineno.sty~ the lowest penalty would 
-% be effective (cf._\TeX book exercise_14.10). Our mechanism, by 
-% contrast, chooses the \emph{last} user-set penalty of the line 
-% as the effective one. It would not be very difficult to come 
-% more close to the original mechanism, but until someone urges 
-% us we will cling to the present simple way. You may consider an 
-% advantage of the difference between our mechanism and the 
-% original one that the user here can actually override low 
-% penalties by ~\nopagebreak~, which may be what a lay \LaTeX\ 
-% user would expect. 
-%% ---Zero glue would do instead of zero 
-%% penalty! This could make things easier. Maybe next time. 
-%% <- v4.4: No, problem with column depth. 
-% (/UL, /New v4.00) 
-
-\def\MakeLineNo{%
-   \@LN@maybe@normalLineNumber                        % v4.31 
-   \boxmaxdepth\maxdimen\setbox\z@\vbox{\unvbox\@cclv}%
-   \@tempdima\dp\z@ \unvbox\z@
-   \sbox\@tempboxa{\hb@xt@\z@{\makeLineNumber}}%
-%% 
-% (New v4.00) Previously, 
-%                                                  \begin{old}\begin{verbatim}
-% %    \stepcounter{linenumber}%
-% \end{verbatim}
-%                                                                    \end{old}
-%%                                         %% TODO: Still first `\begin{old}'?
-% followed. (Of course, there was no 
-% comment mark; I put it there to make 
-% reading the actual code easy.) 
-% 
-% (New v4.22: improved) Why not just 
-%   \[~\global\advance\c@linenumber\@ne~?\]
-% ~\stepcounter~ additionally resets ``subordinate'' 
-% counters, but which could these (usefully) be? 
-% Again, may be column counters with ~edtable.sty~!? 
-% 
-% But then, our ~edtable.sty~ and its ~longtable~ option 
-% should use it as well. So use a shorthand supporting 
-% uniformity. You can even use it as a hook for choosing 
-% ~\global\advance\c@linenumber\@ne~ instead of our choice. 
-% (/New v4.22) 
-%% 
-   \stepLineNumber
-%% 
-%  (New v4.4)   Now 
-%% 
-   \ht\@tempboxa\z@ \@LN@depthbox 
-%% 
-% appends the box containing the line number without changing 
-% ~\prevdepth~---see end of section. 
-% Now is the time for inserting the $\dots$ (/New v4.4) 
-%% The line number has now been placed (it may be invisible 
-%% depending on the modulo feature), so 
-%% we can insert the 
-% ~\vadjust~ items. We cannot do this much later, because 
-% their right place is above the artificial interline 
-% penalty which Stephan's code will soon insert 
-% (cf._\TeX book p._105). The next command is just ~\relax~ 
-% if no ~\vadjust~ items have been accumulated for the 
-% current line. Otherwise it is a list macro inserting 
-% the ~\vadjust~ items and finally resetting itself. 
-% (This is made in section_\ref{ss:PVadj} below.)
-% If the final item is a penalty, it is stored so it can 
-% compete with other things about page breaking. 
-%% 
-   \@LN@do@vadjusts 
-   \count@\lastpenalty 
-%% 
-% At this place, 
-%                                                  \begin{old}\begin{verbatim}
-% %    \ifnum\outputpenalty=-\linenopenaltypar\else
-% \end{verbatim}
-%                                                                    \end{old}
-% originally followed. We need something \emph{before} the 
-% ~\else~: 
-%% 
-   \ifnum\outputpenalty=-\linenopenaltypar 
-     \ifnum\count@=\z@ \else 
-%% 
-% So final ~\pagebreak[0]~ or ~\nopagebreak[0]~ has no 
-% effect---but this will make a difference after headings only, 
-% where nobody should place such a thing anyway. 
-%% 
-       \xdef\@LN@parpgbrk{% 
-         \penalty\the\count@
-         \global\let\noexpand\@LN@parpgbrk
-                      \noexpand\@LN@screenoff@pen}% v4.4 
-%% 
-% That penalty will replace former ~\kern\z@~ in 
-% ~\linenumberpar~, see subsection_\ref{ss:calls}.---A
-% few days earlier, I tried to send just a penalty value. 
-% However, the ~\kern\z@~ in ~\linenumberpar~ is crucial, 
-% as I then found out. See below.---The final penalty is 
-% repeated, but this does no harm. (It would not be very 
-% difficult to avoid the repeating, but it may even be 
-% less efficient.) It may be repeated due to the previous 
-% ~\xdef~, but it may be repeated as well below in the 
-% present macro where artificial interline penalty is to 
-% be overridden.
-%% 
-     \fi
-   \else
-%% 
-% (/New v4.00) 
-%%                                        Corrected code alignment with v4.11. 
-     \@tempcnta\outputpenalty
-     \advance\@tempcnta -\linenopenalty
-%% 
-% (New v4.00) 
-%                                                  \begin{old}\begin{verbatim}
-% %        \penalty\@tempcnta
-% \end{verbatim}
-%                                                                    \end{old}
-% followed previously. To give ~\nopagebreak~ a chance, 
-% we do 
-%%                                        Corrected code alignment with v4.11. 
-     \penalty \ifnum\count@<\@tempcnta \@tempcnta \else \count@ \fi 
-%% 
-% instead.---In ~linenox0.sty~, the ~\else~ thing once was omitted. 
-% Sergei Mariev's complaint (thanks!) showed that it is vital 
-% (see comment before ~\MakeLineNo~). 
-% The remaining ~\fi~ from previous package version closes the 
-% ~\ifnum\outputpenalty~\dots 
-% (/New v4.00) 
-%% 
-   \fi
-   }
-
-% (New v4.00) 
-
-\newcommand\stepLineNumber{\stepcounter{linenumber}} 
-
-% For reason, see use above. (/New v4.00) 
-%%                                   %% TODO v4.4+: ~\newcommand~ more often!? 
-% 
-% (New v4.4)   The depth preserving trick is drawn here from 
-% ~\MakeLineNo~ because it will be used again in 
-% section_\ref{ss:calls}.
-
-\def\@LN@depthbox{% 
-  \dp\@tempboxa=\@tempdima
-  \nointerlineskip \kern-\@tempdima \box\@tempboxa} 
-
-% (/New v4.4) 
-% 
-%                                                                   \section{%
-%               Control line numbering 
-%                                                                     \unskip}
-%                                                                \subsection{%
-%                  Inserting \scs{output} calls           %% own subsec. v4.4. 
-%                                                     \unskip}\label{ss:calls}
-% The line numbering is controlled via ~\par~.  \LaTeX\
-% saved the \TeX-primitive ~\par~ in ~\@@par~.  We push it
-% one level further out, and redefine ~\@@par~ to insert
-% the ~\interlinepenalty~ needed to trigger the
-% line numbering. And we need to allow pagebreaks after a
-% paragraph. 
-% 
-% New (2.05beta): the prevgraf test.  A paragraph that ends with a
-% displayed equation, a ~\noindent\par~ or ~wrapfig.sty~ produce empty
-% paragraphs. These should not get a spurious line number via
-% ~\linenopenaltypar~. 
-
-\let\@@@par\@@par
-\newcount\linenoprevgraf
-
-% (UL)                          And needs ~\linenoprevgraf~ 
-% to be a counter? Perhaps there may be a paragraph having 
-% thousands of lines, so ~\mathchardef~ doesn't suffice (really??). 
-%%
-%%                      %% TODO: limitations of lines per paragraph elsewhere? 
-%%                      %% Signal penalties, e.g.!? ~\deadcycles~!? 
-%%
-% A macro ending on ~\relax~ might suffice, but would be 
-% somewhat slow. I think I will use ~\mathchardef~ next time. 
-% Or has any user used ~\linenoprevgraf~? (/UL) 
-
-%% v4.33: changed code alignment for better understanding. 
-\def\linenumberpar{% 
-  \ifvmode \@@@par \else 
-    \ifinner \@@@par \else
-      \xdef\@LN@outer@holdins{\the\holdinginserts}% v4.2 
-      \advance \interlinepenalty \linenopenalty
-      \linenoprevgraf \prevgraf
-      \global \holdinginserts \thr@@ 
-      \@@@par
-      \ifnum\prevgraf>\linenoprevgraf
-        \penalty-\linenopenaltypar
-      \fi
-%% 
-% (New v4.00) 
-%                                                  \begin{old}\begin{verbatim}
-% %          \kern\z@ 
-% \end{verbatim}
-%                                                                    \end{old}
-% was here previously. What for? 
-% According to \TeX book p._125, Stephan's 
-% interline penalty is changed into 10000. At the end of a 
-% paragraph, the ~\parskip~ would follow that penalty of 10000, 
-% so there could be a page break neither at the 
-% ~\parskip~ nor at the ~\baselineskip~ (\TeX book p._110)---so 
-% there could never be a page break between two paragraphs. 
-% So something must screen off the 10000 penalty. 
-% Indeed, the ~\kern~ is a place to break. 
-% (Stephan once knew this: see `allow pagebreaks' above.)
-% 
-% Formerly, I tried to replace ~\kern\z@~ by 
-%                                                  \begin{old}\begin{verbatim}
-% %         \penalty\@LN@parpgpen\relax 
-% \end{verbatim}
-%                                                                    \end{old}
-% ---but this allows a page break after heading. So: 
-%% 
-      \@LN@parpgbrk 
-%% 
-%% After heading, ~\kern\z@~ resulting from previous line 
-%% (see below) is followed by ~\write~ or ~\penalty10000~, 
-%% so causes no page break. 
-% 
-% These and similar changes were formerly done by ~linenox1.sty~. 
-% (/New v4.00) 
-% 
-% (New v4.4) 
-% A ~\belowdisplayskip~ may precede the previous when the paragraph 
-% ends on a display-math; or there may be a ~\topsep~ from a list, etc. 
-% ~\addvspace~ couldn't take account for it with ~\kern\z@~ 
-% here. v4.32 therefore moved the space down -- with at least two 
-% bad consequences. 
-% Moreover, David Josef Dev observes that ~\kern\z@~ may 
-% inappropriately yield column depth 0pt. 
-% For these reasons, we introduce ~\@LN@screenoff@pen~ below. 
-% (/New v4.4) 
-%% 
-      \global\holdinginserts\@LN@outer@holdins % v4.2
-      \advance\interlinepenalty -\linenopenalty
-    \fi     % from \ifinner ... \else 
-  \fi}      % from \ifvmode ... \else 
-
-% (New v4.00, v4.4) Initialize ~\@LN@parpgbrk~, accounting 
-% for earlier space and for appropriate columndepth. 
-% We use former ~\MakeLineNo~'s depth-preverving trick 
-% ~\@LN@depthbox~ again: 
-
-\def\@LN@screenoff@pen{% 
-  \ifdim\lastskip=\z@ 
-    \@tempdima\prevdepth \setbox\@tempboxa\null 
-    \@LN@depthbox                           \fi}
-
-\global\let\@LN@parpgbrk\@LN@screenoff@pen 
-
-% (/New v4.4, v4.00) 
-%                                                                \subsection{%
-%                  Turning on/off                         %% own subsec. v4.4.
-%                                                     \unskip}\label{ss:OnOff}
-% The basic commands to enable and disable line numbers.
-% ~\@par~ and ~\par~ are only touched, when they are ~\let~ 
-% to ~\@@@par~/~\linenumberpar~.  The line number may be
-% reset to 1 with the star-form, or set by an optional
-% argument ~[~<number>~]~. 
-% 
-% (New v4.00)        We add ~\ifLineNumbers~ etc.\ since 
-% a number of our new adjustments need to know whether 
-% linenumbering is active. This just provides a kind of 
-% shorthand for ~\ifx\@@par\linenumberpar~; moreover it is 
-% more stable: who knows what may happen to ~\@@par~?---A 
-% caveat: ~\ifLineNumbers~ may be wrong. E.g., it may be 
-% ~\iffalse~ where it acts, while a ~\linenumbers~ a few 
-% lines below---in the same paragraph---brings about that 
-% the line where the ~\ifLineNumbers~ appears gets a 
-% marginal number. 
-%%                                      Better implementation suggested below. 
-%% 
-% (New v4.3)        Just noticed: Such tricks have been 
-% disallowed with v4.11, see subsections_\ref{ss:LL} 
-% and_\ref{ss:OnOff}.---Moreover, the switching between
-% meanings of ~\linelabel~ for a possible error message 
-% as of v4.11 is removed. Speed is difficult to esteem 
-% and also depends on applications. Just use the most 
-% simple code you find.                      (/New v4.3) 
-
-\newif\ifLineNumbers \LineNumbersfalse 
-
-% (/New v4.00) 
-
-\def\linenumbers{% 
-     \LineNumberstrue                            % v4.00 
-     \xdef\@LN@outer@holdins{\the\holdinginserts}% v4.3 
-%%
-% (New v4.3) The previous line is for ~{linenomath}~ 
-% in a first numbered paragraph.         (/New v4.3) 
-%% 
-     \let\@@par\linenumberpar
- %      \let\linelabel\@LN@linelabel % v4.11, removed v4.3 
-     \ifx\@par\@@@par\let\@par\linenumberpar\fi
-     \ifx\par\@@@par\let\par\linenumberpar\fi
-     \@LN@maybe@moduloresume         % v4.31 
-     \@ifnextchar[{\resetlinenumber}%]
-                 {\@ifstar{\resetlinenumber}{}}%
-     }
-
-\def\nolinenumbers{% 
-  \LineNumbersfalse                              % v4.00
-  \let\@@par\@@@par
- %   \let\linelabel\@LN@LLerror      % v4.11, removed v4.3 
-  \ifx\@par\linenumberpar\let\@par\@@@par\fi
-  \ifx\par\linenumberpar\let\par\@@@par\fi
-  }
-
-% (New v4.00)               Moreover, it is useful to switch to 
-% ~\nolinenumbers~ in ~\@arrayparboxrestore~. We postpone this 
-% to section_\ref{ss:ReDef} where we'll have an appending macro 
-% for doing this.                                  (/New v4.00) 
-% 
-% What happens with a display math?  Since ~\par~ is not executed,
-% when breaking the lines before a display, they will not get
-% line numbers.  Sorry, but I do not dare to change
-% ~\interlinepenalty~ globally, nor do I want to redefine
-% the display math environments here.
-%   \begin{displaymath}
-%                       display \ math
-%   \end{displaymath}
-% See the subsection below, for a wrapper environment to make
-% it work.  But that requires to wrap each and every display
-% in your \LaTeX\ source %%.
-%% v4.3: 
-% (see option ~displaymath~ in subsections_\ref{ss:v3opts} 
-% and_\ref{ss:display} for some relief [UL]). 
-%
-% The next two commands are provided to turn on line
-% numbering in a specific mode. Please note the difference:
-% for pagewise numbering, ~\linenumbers~ comes first to
-% inhibit it from seeing optional arguments, since
-% re-/presetting the counter is useless. 
-
-\def\pagewiselinenumbers{\linenumbers\setpagewiselinenumbers}
-\def\runninglinenumbers{\setrunninglinenumbers\linenumbers}
-
-% Finally, it is a \LaTeX\ style, so we provide for the use
-% of environments, including the suppression of the
-% following paragraph's indentation.
-% 
-%% TODO: v4.4+: 
-% (UL)                                I am drawing the following 
-% private thoughts of Stephan's to publicity so that others may 
-% think about them---or to remind myself of them in an efficient 
-% way.                                                     (/UL) 
-%% UL changed `%%%' to `% %' below. 
-%% TODO: add \par to \linenumbers, if called from an environment. %% v4.3 
-%% ToDO: add an \@endpe hack if \linenumbers are turned on
-%                                                  \begin{old}\begin{verbatim} 
-% % TO DO: add \par to \linenumbers, if called from an environment.
-% % To DO: add an \@endpe hack if \linenumbers are turned on
-% %        in horizontal mode. {\par\parskip\z@\noindent} or
-% %        something.
-% \end{verbatim}
-%                                                                    \end{old} 
-% (UL)     However, I rather think that ~\linenumbers~ and        %% v4.31 
-% ~\nolinenumbers~ should execute a ~\par~ already. (Then the 
-% ~\par~s in the following definitions should be removed.) (/UL) 
-
-\@namedef{linenumbers*}{\par\linenumbers*}
-\@namedef{runninglinenumbers*}{\par\runninglinenumbers*}
-
-\def\endlinenumbers{\par\@endpetrue}
-\let\endrunninglinenumbers\endlinenumbers
-\let\endpagewiselinenumbers\endlinenumbers
-\expandafter\let\csname endlinenumbers*\endcsname\endlinenumbers
-\expandafter\let\csname endrunninglinenumbers*\endcsname\endlinenumbers
-\let\endnolinenumbers\endlinenumbers
-
-%
-%                                                                \subsection{%
-%                  Display math
-%                                                        \unskip}\label{ss:DM}
-%
-% Now we tackle the problem to get display math working.  
-% There are different options.
-%                                                      \begin{enumerate}\item[
-% 1.]  Precede every display math with a ~\par~.  
-%      Not too good.
-%                                                                       \item[
-% 2.]  Change ~\interlinepenalty~ and associates globally.  
-%      Unstable.
-%                                                                       \item[
-% 3.]  Wrap each display math with a ~{linenomath}~  
-%      environment. 
-%                                                              \end{enumerate}
-% We'll go for option 3.  See if it works:  
-% \begin{linenomath}
-%   \begin{equation}
-%      display \ math
-%   \end{equation}
-% \end{linenomath}
-% The star form ~{linenomath*}~ should also number the lines
-% of the display itself,
-% \begin{linenomath*}
-%   \begin{eqnarray}
-%     multi   && line \\
-%     display && math \\
-%     & 
-%     \begin{array}{c}
-%       with \\
-%       array
-%     \end{array}
-%     &
-%   \end{eqnarray}
-% \end{linenomath*}
-% including multline displays.
-% 
-% First, here are two macros to turn
-% on linenumbering on paragraphs preceeding displays, with
-% numbering the lines of the display itself, or without.
-% The ~\ifx..~ tests if line numbering is turned on.  It
-% does not harm to add these wrappers in sections that are
-% not numbered.  Nor does it harm to wrap a display
-% twice, e.q, in case you have some ~{equation}~s wrapped
-% explicitely, and later you redefine ~\equation~ to do it
-% automatically. 
-% 
-% (New v4.3)  To avoid the spurious line number above a 
-% display in vmode, I insert ~\ifhmode~.       (/New v4.3) 
-
-\newcommand\linenomathNonumbers{%
-  \ifLineNumbers 
-%%  \ifx\@@par\@@@par\else 
-    \ifnum\interlinepenalty>-\linenopenaltypar
-      \global\holdinginserts\thr@@ 
-      \advance\interlinepenalty \linenopenalty
-     \ifhmode                                   % v4.3 
-      \advance\predisplaypenalty \linenopenalty
-     \fi 
-    \fi
-  \fi
-  \ignorespaces
-  }
-
-\newcommand\linenomathWithnumbers{%
-  \ifLineNumbers 
-%%  \ifx\@@par\@@@par\else
-    \ifnum\interlinepenalty>-\linenopenaltypar
-      \global\holdinginserts\thr@@ 
-      \advance\interlinepenalty \linenopenalty
-     \ifhmode                                   % v4.3 
-      \advance\predisplaypenalty \linenopenalty
-     \fi 
-      \advance\postdisplaypenalty \linenopenalty
-      \advance\interdisplaylinepenalty \linenopenalty
-    \fi
-  \fi
-  \ignorespaces
-  }
-
-% The ~{linenomath}~ environment has two forms, with and
-% without a star.  The following two macros define the
-% environment, where the stared/non-stared form does/doesn't number the
-% lines of the display or vice versa.
-
-\newcommand\linenumberdisplaymath{%
-  \def\linenomath{\linenomathWithnumbers}%
-  \@namedef{linenomath*}{\linenomathNonumbers}%
-  }
-
-\newcommand\nolinenumberdisplaymath{%
-  \def\linenomath{\linenomathNonumbers}%
-  \@namedef{linenomath*}{\linenomathWithnumbers}%
-  }
-
-\def\endlinenomath{% 
-  \ifLineNumbers                            % v4.3 
-   \global\holdinginserts\@LN@outer@holdins % v4.21 
-  \fi 
-   \global % v4.21 support for LaTeX2e earlier than 1996/07/26. 
-   \@ignoretrue
-}
-\expandafter\let\csname endlinenomath*\endcsname\endlinenomath
-
-% The default is not to number the lines of a display.  But
-% the package option ~mathlines~ may be used to switch
-% that behavior.
-
-\nolinenumberdisplaymath
-
-%
-%                                                                   \section{%
-%               Line number references
-%                                                      \unskip}\label{s:LNref} 
-%                                                                \subsection{% 
-%                  Internals                              %% New subsec. v4.3. 
-%                                                                     \unskip}
-% The only way to get a label to a line number in a
-% paragraph is to ask the output routine to mark it.
-%
-% (New v4.00) The following two paragraphs don't hold any 
-% longer, see below. (/New v4.00) 
-%                                                  \begin{old}\begin{verbatim}
-% % We use the marginpar mechanism to hook to ~\output~ for a
-% % second time.  Marginpars are floats with number $-1$, we
-% % fake marginpars with No $-2$. Originally, every negative
-% % numbered float was considered to be a marginpar.
-% % 
-% % The float box number ~\@currbox~ is used to transfer the
-% % label name in a macro called ~\@LNL@~<box-number>.
-% \end{verbatim}
-%                                                                    \end{old}
-% A ~\newlabel~ is written to the aux-file.  The reference
-% is to ~\theLineNumber~, \emph{not} ~\thelinenumber~.
-% This allows to hook in, as done below for pagewise line
-% numbering. 
-%
-% (New v3.03) The ~\@LN@ExtraLabelItems~ are added for a hook
-% to keep packages like ~{hyperref}~ happy.      (/New v3.03)
-% 
-% (New v4.00) 
-% We fire the ~\marginpar~ mechanism, so we leave \LaTeX's 
-% ~\@addmarginpar~ untouched. 
-%                                                  \begin{old}\begin{verbatim}
-% % \let\@LN@addmarginpar\@addmarginpar
-% % \def\@addmarginpar{%
-% %    \ifnum\count\@currbox>-2\relax
-% %      \expandafter\@LN@addmarginpar
-% %    \else
-% %      \@cons\@freelist\@currbox
-% %      \protected@write\@auxout{}{%
-% %          \string\newlabel
-% %             {\csname @LNL@\the\@currbox\endcsname}%
-% %             {{\theLineNumber}{\thepage}\@LN@ExtraLabelItems}}%
-% %    \fi}
-% \end{verbatim}
-%                                                                    \end{old}
-% OK, we keep Stephan's ~\@LN@ExtraLabelItems~: 
-% (/New v4.00) 
-
-\let\@LN@ExtraLabelItems\@empty
-
-% (New v4.00) 
-% We imitate the ~\marginpar~ mechanism without using the 
-% ~\@freelist~ boxes. ~\linelabel~ will indeed place a signal 
-% penalty (~\@Mllbcodepen~, new), and it will put a label into 
-% some list macro ~\@LN@labellist~. A new part of the output 
-% routine will take the labels from the list and will write 
-% ~\newlabel~s to the .aux file. 
-% 
-% The following is a version of \LaTeX's ~\@xnext~.
-
-\def\@LN@xnext#1\@lt#2\@@#3#4{\def#3{#1}\gdef#4{#2}}
-
-% This takes an item ~#1~ from a list ~#4~ into ~#3~; 
-% to be used as ~\expandafter\@LN@xnext#4\@@#3#4~. 
-% Our lists use ~\@lt~ after each item for separating. 
-% Indeed, there will be another list macro which can 
-% appear as argument ~#4~, this will be used for moving 
-% ~\vadjust~ items (section_\ref{ss:PVadj}). 
-% The list for ~\linelabel~s is the following: 
-
-\global\let\@LN@labellist\@empty 
-
-% The next is the new part of the output routine writing the 
-% ~\newlabel~ to the .aux file. Since it is no real page output, 
-% the page is put back to top of the main vertical list. 
-
-\def\WriteLineNo{% 
-  \unvbox\@cclv 
-  \expandafter \@LN@xnext \@LN@labellist \@@ 
-                          \@LN@label \@LN@labellist 
-  \protected@write\@auxout{}{\string\newlabel{\@LN@label}% 
-         {{\theLineNumber}{\thepage}\@LN@ExtraLabelItems}}% 
-}
-
-% (/New v4.00)
-% 
-%                                                                \subsection{%
-%                  The \scs{linelabel} command
-%                                                        \unskip}\label{ss:LL}
-% To refer to a place in line ~\ref{~<foo>~}~ at page
-% ~\pageref{~<foo>~}~ you place a ~\linelabel{~<foo>~}~ at
-% that place.
-%
-%                   \linelabel{demo}
-%                   \marginpar{\tiny\raggedright
-%                       See if it works: This paragraph
-%                       starts on page \pageref{demo}, line
-%                       \ref{demo}.  
-%                   \unskip}%
-% (New v4.11) 
-%                                                  \begin{old}\begin{verbatim}
-% % If you use this command outside a ~\linenumbers~
-% % paragraph, you will get references to some bogus
-% % line numbers, sorry.  But we don't disable the command,
-% % because only the ~\par~ at the end of a paragraph  may
-% % decide whether to print line numbers on this paragraph
-% % or not.  A ~\linelabel~ may legally appear earlier than
-% % ~\linenumbers~.
-% \end{verbatim}
-%                                                                    \end{old} 
-% This trick is better not allowed---see subsections_\ref{ss:LL} 
-% and_\ref{ss:OnOff}.
-% (/New v4.11)
-%
-% ~\linelabel~ 
-%                                                  \begin{old}\begin{verbatim}
-% %, via a fake float number $-2$, %% new mechanism v4.00
-% \end{verbatim}
-%                                                                    \end{old}
-% puts a
-% ~\penalty~ into a ~\vadjust~, which triggers the
-% pagebuilder after putting the current line to the main
-% vertical list.  A ~\write~ is placed on the main vertical
-% list, which prints a reference to the current value of
-% ~\thelinenumber~ and ~\thepage~ at the time of the
-% ~\shipout~.
-%
-% A ~\linelabel~ is allowed only in outer horizontal mode.
-% In outer vertical mode we start a paragraph, and ignore
-% trailing spaces (by fooling ~\@esphack~).
-% 
-% (New v4.00) We aim at relaxing the previous condition. 
-% We insert a hook ~\@LN@mathhook~ and a shorthand 
-% ~\@LN@postlabel~ to support the ~mathrefs~ option which 
-% allows ~\linelabel~ in math mode. 
-%
-% The next paragraph is no longer valid. 
-%                                                  \begin{old}\begin{verbatim}
-% % The argument of ~\linelabel~ is put into a macro with a
-% % name derived from the number of the allocated float box.
-% % Much of the rest is dummy float setup.
-% \end{verbatim}
-%                                                                    \end{old}
-% (/New v4.00) 
-%
-% (New v4.11) 
-%                                                  \begin{old}\begin{verbatim} 
-% % \def\linelabel#1{%
-% \end{verbatim}
-%                                                                    \end{old} 
-% I forgot ~\linenumbers~ today, costed me hours or so. 
-
-\def\@LN@LLerror{\PackageError{lineno}{% 
-  \string\linelabel\space without \string\linenumbers}{% 
-  Just see documentation. (New feature v4.11)}\@gobble}
-
-% (New v4.3)         Here some things have changed for v4.3. 
-% The previous ~#1~ has been replaced by ~\@gobble~. 
-% Ensuing, the ~\linelabel~ error message is re-implemented. 
-% I find it difficult to compare efficiency of slight 
-% alternatives---so choose an easy one. Explicit switching 
-% in ~\linenumbers~ and ~\nolinenumbers~ is an additional 
-% command that may better be avoided. 
-
-\newcommand\linelabel{% 
-  \ifLineNumbers \expandafter \@LN@linelabel 
-  \else          \expandafter \@LN@LLerror   \fi}
-%%\let\linelabel\@LN@LLerror 
-
-\gdef\@LN@linelabel#1{% 
-%% 
-% ~\gdef~ for hyperref ``symbolically''. (/New v4.11) 
-%% 
-  \ifx\protect\@typeset@protect 
-%% 
-% $\gets$ And a ~\linelabel~ should never be replicated in a 
-% mark or a TOC entry.                           (/New v4.3) 
-%% 
-   \ifvmode
-       \ifinner \else 
-          \leavevmode \@bsphack \@savsk\p@
-       \fi
-   \else
-       \@bsphack
-   \fi
-   \ifhmode
-     \ifinner
-       \@parmoderr
-     \else
-%% 
-% (New v4.00) 
-%% 
-       \@LN@postlabel{#1}% 
-%                                                  \begin{old}\begin{verbatim}
-% %        \@floatpenalty -\@Mii
-% %        \@next\@currbox\@freelist
-% %            {\global\count\@currbox-2%
-% %             \expandafter\gdef\csname @LNL@\the\@currbox\endcsname{#1}}%
-% %            {\@floatpenalty\z@ \@fltovf \def\@currbox{\@tempboxa}}%
-% %        \begingroup
-% %            \setbox\@currbox \color@vbox \vbox \bgroup \end@float
-% %        \endgroup
-% %        \@ignorefalse \@esphack
-% \end{verbatim}
-%                                                                    \end{old} 
-% (/New v4.00) 
-%% 
-       \@esphack 
-%% 
-% (New v4.00) 
-% The ~\@ignorefalse~ was appropriate before because the 
-% ~\@Esphack~ in ~\end@float~ set ~\@ignoretrue~. Cf._\LaTeX's 
-% ~\@xympar~. (/New v4.00) 
-%% 
-     \fi
-   \else
-%% 
-% (New v4.00) 
-%% 
-     \@LN@mathhook{#1}%
-%                                                  \begin{old}\begin{verbatim}
-% %     \@parmoderr
-% \end{verbatim}
-%                                                                    \end{old} 
-% Instead of complaining, you may just do your job. 
-% (/New v4.00) 
-%% 
-   \fi
-  \fi 
-   }
-
-% (New v4.00)   The shorthand just does what happened 
-% with ~linenox0.sty~ before ~ednmath0.sty~ (New v4.1: 
-% now ~mathrefs~ option) appeared, and 
-% the hook is initialized to serve the same purpose. 
-% So errors come just where Stephan had built them in, 
-% and this is just the \LaTeX\ ~\marginpar~ behaviour. 
-
-\def\@LN@postlabel#1{\g@addto@macro\@LN@labellist{#1\@lt}%
-       \vadjust{\penalty-\@Mllbcodepen}} 
-\def\@LN@mathhook#1{\@parmoderr}
-
-% (/New v4.00) 
-% 
-%                                                        \modulolinenumbers[3] 
-%                                                          \firstlinenumber{1}
-%                                                                   \section{%
-%               The appearance of the line numbers
-%                                                   \unskip}\label{appearance}
-%                                                                \subsection{%
-%                  Basic code                             %% own subsec. v4.2. 
-%                                                                     \unskip}
-% 
-% The line numbers are set as ~\tiny\sffamily\arabic{linenumber}~,
-% $10pt$ left of the text.  With options to place it
-% right of the text, or . . .
-%
-%      . . . here are the hooks:
-
-\def\makeLineNumberLeft{% 
-  \hss\linenumberfont\LineNumber\hskip\linenumbersep}
-
-\def\makeLineNumberRight{% 
-  \linenumberfont\hskip\linenumbersep\hskip\columnwidth
-  \hb@xt@\linenumberwidth{\hss\LineNumber}\hss}
-
-\def\linenumberfont{\normalfont\tiny\sffamily}
-
-\newdimen\linenumbersep
-\newdimen\linenumberwidth
-
-\linenumberwidth=10pt
-\linenumbersep=10pt
-
-% Margin switching requires ~pagewise~ numbering mode, but
-% choosing the left or right margin for the numbers always
-% works. 
-
-\def\switchlinenumbers{\@ifstar
-    {\let\makeLineNumberOdd\makeLineNumberRight
-     \let\makeLineNumberEven\makeLineNumberLeft}%
-    {\let\makeLineNumberOdd\makeLineNumberLeft
-     \let\makeLineNumberEven\makeLineNumberRight}%
-    }
-
-\def\setmakelinenumbers#1{\@ifstar
-  {\let\makeLineNumberRunning#1%
-   \let\makeLineNumberOdd#1%
-   \let\makeLineNumberEven#1}%
-  {\ifx\c@linenumber\c@runninglinenumber
-      \let\makeLineNumberRunning#1%
-   \else
-      \let\makeLineNumberOdd#1%
-      \let\makeLineNumberEven#1%
-   \fi}%
-  }
-
-\def\leftlinenumbers{\setmakelinenumbers\makeLineNumberLeft}
-\def\rightlinenumbers{\setmakelinenumbers\makeLineNumberRight}
-
-\leftlinenumbers*
-
-% ~\LineNumber~ is a hook which is used for the modulo stuff.
-% It is the command to use for the line number, when you
-% customize ~\makeLineNumber~.  Use ~\thelinenumber~ to
-% change the outfit of the digits.
-%
-%
-% We will implement two modes of operation:
-%                                                              \begin{itemize}
-% \item  numbers ~running~ through (parts of) the text
-% \item  ~pagewise~ numbers starting over with one on top of
-%        each page.
-%                                                                \end{itemize}
-% Both modes have their own count register, but only one is
-% allocated as a \LaTeX\ counter, with the attached
-% facilities serving both.
-
-\newcounter{linenumber}
-\newcount\c@pagewiselinenumber
-\let\c@runninglinenumber\c@linenumber
-
-% Only the running mode counter may be reset, or preset,
-% for individual paragraphs.  The pagewise counter must
-% give a unique anonymous number for each line.
-% 
-% (New v4.3)                  ~\newcounter{linenumber}~ 
-% was the only ~\newcounter~ in the whole package, and 
-% formerly I was near using ~\newcount~ instead. Yet 
-% ~\newcounter~ may be quite useful for ~\includeonly~. 
-% It also supports resetting ``subcounters'', but what 
-% could these be? Well, ~edtable~ might introduce a 
-% subcounter for columns. 
-% (Note that \LaTeX's setting commands would work with 
-% ~\newcount\c@linenumber~ already, apart from this. 
-% And perhaps sometimes ~\refstepcounter{linenumber}~ 
-% wouldn't work---cf._my discussion of ~\stepcounter~ in 
-% subsection_\ref{ss:MLN}, similarly ~\refstep...~ would 
-% be quite useless. 
-% Even the usual redefinitions of ~\thelinenumber~ would 
-% work. It is nice, on the other hand, that 
-% ~\thelinenumber~ is predefined here. \LaTeX's 
-% initialization of the value perhaps just serves making 
-% clear \LaTeX\ counters should always be changed 
-% globally.---Shortened and improved the discussion here.) 
-% (/New v4.3) 
-% 
-% (New v4.22) 
-% ~\c@linenumber~ usually is---globally---incremented by 
-% ~\stepcounter~ (at present), so resetting it locally would 
-% raise the save stack problem of \TeX book p._301, moreover 
-% it would be is useless, there is no hope of keeping the 
-% values local (but see subsection_\ref{ss:ILN}). So I insert 
-% ~\global~:        (/New v4.22) 
-
-\newcommand*\resetlinenumber[1][\@ne]{% 
-  \global                             % v4.22
-  \c@runninglinenumber#1\relax}
-
-% (New v4.00) 
-%                                                  \begin{old}\begin{verbatim}
-% % \newcommand\resetlinenumber[1][1]{\c@runninglinenumber#1}
-% \end{verbatim}
-%                                                                    \end{old}
-% Added ~\relax~, being quite sure that this does no harm 
-% and is quite important, as with ~\setcounter~ etc. 
-% I consider this a bug fix (although perhaps no user has 
-% ever had a problem with this).    (/New v4.00) 
-% 
-% (v4.22: I had made much fuss about resetting subordinate 
-% counters here---removed, somewhat postponed.)
-% 
-%% TODO v4.4+: 
-%% \newcommand*\resetlinenumber[1][\@ne]{% 
-%%   \ifx\c@linenumber\c@runninglinenumber 
-%%     \global\c@linenumber#1\relax
-%%     \global\advance\c@linenumber\m@ne 
-%%     \stepLineNumber 
-%%   \else 
-%%     \PackageError{lineno}%% Shorthand!? 
-%%       {You can't reset line number in pagewise mode}% 
-%%       {This should suffice.}% 
-%%   \fi 
-%% } 
-% 
-%                                                                \subsection{%
-%                  Running line numbers
-%                                                                     \unskip} 
-% 
-% Running mode is easy,  ~\LineNumber~ and ~\theLineNumber~
-% produce ~\thelinenumber~, which defaults to
-% ~\arabic{linenumber}~, using the ~\c@runninglinenumber~
-% counter.  This is the default mode of operation.
-
-\def\makeRunningLineNumber{\makeLineNumberRunning}
-
-\def\setrunninglinenumbers{%
-   \def\theLineNumber{\thelinenumber}%
-   \let\c@linenumber\c@runninglinenumber
-   \let\makeLineNumber\makeRunningLineNumber
-   }
-
-\setrunninglinenumbers\resetlinenumber
-
-%
-%                                                                \subsection{%
-%                  Pagewise line numbers
-%                                                        \unskip}\label{ss:PW} 
-% 
-% Difficult, if you think about it.  The number has to be
-% printed when there is no means to know on which page it
-% will end up,  except through the aux-file.  My solution  
-% is really expensive, but quite robust.  
-%
-% With version ~v2.00~ the hashsize requirements are
-% reduced, because we do not need one controlsequence for
-% each line any more.  But this costs some computation time
-% to find out on which page we are.
-%
-% ~\makeLineNumber~ gets a hook to log the line and page
-% number to the aux-file.  Another hook tries to find out
-% what the page offset is, and subtracts it from the counter
-% ~\c@linenumber~.  Additionally, the switch
-% ~\ifoddNumberedPage~ is set true for odd numbered pages,
-% false otherwise.
-
-\def\setpagewiselinenumbers{%
-   \let\theLineNumber\thePagewiseLineNumber
-   \let\c@linenumber\c@pagewiselinenumber
-   \let\makeLineNumber\makePagewiseLineNumber
-   }
-
-\def\makePagewiseLineNumber{\logtheLineNumber\getLineNumber
-  \ifoddNumberedPage
-     \makeLineNumberOdd
-  \else
-     \makeLineNumberEven
-  \fi
-  }
-
-% Each numbered line gives a line to the aux file
-%                                                                \begin{verse}
-%     ~\@LN{~<line>~}{~<page>~}~
-%                                                                  \end{verse}
-% very similar to the ~\newlabel~ business, except that we need
-% an arabic representation of the page number, not what
-% there might else be in ~\thepage~.
-
-\def\logtheLineNumber{\protected@write\@auxout{}{%
-%% 
-% (New v4.00) (UL)
-% As Daniel Doherty observed, the earlier line 
-%                                                  \begin{old}\begin{verbatim}
-% %    \string\@LN{\the\c@linenumber}{\noexpand\the\c@page}}}
-% \end{verbatim}
-%                                                                    \end{old}
-% here may lead into an infinite loop when the user resets 
-% the page number (think of ~\pagenumbering~, e.g.). 
-% Stephan and I brief\/ly discussed the matter and decided 
-% to introduce a ``physical''-page counter to which 
-% ~\logtheLineNumber~ refers. It was Stephan's idea to use 
-% ~\cl@page~ for reliably augmenting the ``physical''-page 
-% counter. However, this relies on the output routine once 
-% doing ~\stepcounter{page}~. Before Stephan's 
-% suggestion, I had thought of appending the stepping to 
-% \LaTeX's ~\@outputpage~.---So the macro definition ends 
-% as follows. 
-%% 
-   \string\@LN{\the\c@linenumber}{% 
-%%
-% (New v4.2) 
-%%     \noexpand\number\n@LN@truepage}}} 
-%%
-% The `truepage' counter must start with ~\c@~ so it works 
-% with ~\include~, and the ~\@addtoreset~ below is needed 
-% for the same purpose. 
-%% 
-     \noexpand\the\c@LN@truepage}}} 
-
-%% \newcount\n@LN@truepage 
-%% \g@addto@macro\cl@page{\global\advance\n@LN@truepage\@ne}
-\newcount\c@LN@truepage 
-\g@addto@macro\cl@page{\global\advance\c@LN@truepage\@ne}
-\@addtoreset{LN@truepage}{@ckpt}
-
-% (/New v4.2)                I had thought of offering more 
-% features of a \LaTeX\ counter. However, the user should 
-% better \emph{not} have access to this counter. ~\c@page~ 
-% should suffice as a pagewise master counter.---To be sure, 
-% along the present lines the user \emph{can} manipulate 
-% ~\c@LN@truepage~ by ~\stepcounter{page}~. E.g., she might 
-% do this in order to manually insert a photograph. Well, 
-% seems not to harm. 
-% 
-% The above usage of ~\g@addto@macro~ and ~\cl@page~ may be 
-% not as stable as Stephan intended. His proposal used 
-% ~\xdef~ directly. But he used ~\cl@page~ as well, and who 
-% knows \dots{} And as to ~\g@addto@macro~, I have introduced 
-% it for list macros anyway. 
-% (/UL) (/New v4.00) 
-% 
-% From the aux-file we get one macro ~\LN@P~<page> for each
-% page with line numbers on it.  This macro calls four other
-% macros with one argument each.  These macros are
-% dynamically defined to do tests and actions, to find out
-% on which page the current line number is located.
-%
-% We need sort of a pointer to the first page with line
-% numbers, initiallized to point to nothing:
-
-\def\LastNumberedPage{first} 
-\def\LN@Pfirst{\nextLN\relax}
-
-% The four dynamic macros are initiallized to reproduce
-% themselves in an ~\xdef~
-
-\let\lastLN\relax  % compare to last line on this page
-\let\firstLN\relax % compare to first line on this page
-\let\pageLN\relax  % get the page number, compute the linenumber
-\let\nextLN\relax  % move to the next page
-
-% During the end-document run through the aux-files, we
-% disable ~\@LN~.  I may put in a check here later, to give
-% a rerun recommendation.  
-
-\AtEndDocument{\let\@LN\@gobbletwo}
-
-% Now, this is the tricky part.  First of all, the whole
-% definition of ~\@LN~ is grouped, to avoid accumulation
-% on the save stack. Somehow ~\csname~<cs>~\endcsname~ pushes
-% an entry, which stays after an ~\xdef~ to that <cs>.
-%
-% If ~\LN@P~<page> is undefined, initialize it with the
-% current page and line number, with the
-% \emph{pointer-to-the-next-page} pointing to nothing.  And
-% the macro for the previous page will be redefined to point
-% to the current one. 
-%
-% If the macro for the current page already exists, just
-% redefine the \emph{last-line-number} entry.
-%
-% Finally, save the current page number, to get the pointer to the
-% following page later.
-
-\def\@LN#1#2{{\expandafter\@@LN
-                 \csname LN@P#2C\@LN@column\expandafter\endcsname
-                 \csname LN@PO#2\endcsname
-                 {#1}{#2}}}
-
-\def\@@LN#1#2#3#4{\ifx#1\relax
-    \ifx#2\relax\gdef#2{#3}\fi
-    \expandafter\@@@LN\csname LN@P\LastNumberedPage\endcsname#1% 
-    \xdef#1{\lastLN{#3}\firstLN{#3}% 
-            \pageLN{#4}{\@LN@column}{#2}\nextLN\relax}%
-  \else
-    \def\lastLN##1{\noexpand\lastLN{#3}}%
-    \xdef#1{#1}%
-  \fi
-  \xdef\LastNumberedPage{#4C\@LN@column}}
-
-% The previous page macro gets its pointer to the
-% current one, replacing the ~\relax~ with the cs-token
-% ~\LN@P~<page>.  
-
-\def\@@@LN#1#2{{\def\nextLN##1{\noexpand\nextLN\noexpand#2}%
-                \xdef#1{#1}}}
-
-% Now, to print a line number, we need to find the page,
-% where it resides.  This will most probably be the page where
-% the last one came from, or maybe the next page.  However, it can
-% be a completely different one.  We maintain a cache,
-% which is ~\let~ to the last page's macro.  But for now
-% it is initialized to expand ~\LN@first~, where the poiner
-% to the first numbered page has been stored in. 
-
-\def\NumberedPageCache{\LN@Pfirst}
-
-% To find out on which page the current ~\c@linenumber~ is, 
-% we define the four dynamic macros to do something usefull
-% and execute the current cache macro.  ~\lastLN~ is run
-% first, testing if the line number in question may be on a
-% later page.  If so, disable ~\firstLN~, and go on to the
-% next page via ~\nextLN~.
-
-\def\testLastNumberedPage#1{\ifnum#1<\c@linenumber
-      \let\firstLN\@gobble
-  \fi}
-
-% Else, if ~\firstLN~ finds out that we need an earlier
-% page,  we start over from the beginning. Else, ~\nextLN~
-% will be disabled, and ~\pageLN~ will run
-% ~\gotNumberedPage~ with four arguments: the first line
-% number on this column, the page number, the column 
-% number, and the first line on the page.
-
-\def\testFirstNumberedPage#1{\ifnum#1>\c@linenumber
-     \def\nextLN##1{\testNextNumberedPage\LN@Pfirst}%
-  \else
-      \let\nextLN\@gobble
-      \def\pageLN{\gotNumberedPage{#1}}%
-  \fi}
-
-% We start with ~\pageLN~ disabled and ~\nextLN~ defined to
-% continue the search with the next page.
-
-\long\def \@gobblethree #1#2#3{}
-
-\def\testNumberedPage{%
-  \let\lastLN\testLastNumberedPage
-  \let\firstLN\testFirstNumberedPage
-  \let\pageLN\@gobblethree
-  \let\nextLN\testNextNumberedPage
-  \NumberedPageCache
-  }
-
-% When we switch to another page, we first have to make
-% sure that it is there.  If we are done with the last 
-% page, we probably need to run \TeX\ again, but for the
-% rest of this run, the cache macro will just return four
-% zeros. This saves a lot of time, for example if you have
-% half of an aux-file from an aborted run,  in the next run
-% the whole page-list would be searched in vain again and
-% again for the second half of the document.
-%
-% If there is another page, we iterate the search. 
-
-\def\testNextNumberedPage#1{\ifx#1\relax
-     \global\def\NumberedPageCache{\gotNumberedPage0000}%
-     \PackageWarningNoLine{lineno}%
-                    {Linenumber reference failed,
-      \MessageBreak  rerun to get it right}%
-   \else
-     \global\let\NumberedPageCache#1%
-   \fi
-   \testNumberedPage
-   }
-
-%                             \linelabel{demo2}
-%                             \marginpar{\tiny\raggedright
-%                                 Let's see if it finds the label
-%                                 on page \pageref{demo}, 
-%                                 line \ref{demo}, and back here
-%                                 on page \pageref{demo2}, line
-%                                 \ref{demo2}. 
-%                             \unskip}%
-% To separate the official hooks from the internals there is
-% this equivalence, to hook in later for whatever purpose:
-
-\let\getLineNumber\testNumberedPage
-
-% So, now we got the page where the number is on.  We
-% establish if we are on an odd or even page, and calculate
-% the final line number to be printed.
-
-\newif\ifoddNumberedPage
-\newif\ifcolumnwiselinenumbers
-\columnwiselinenumbersfalse
-
-\def\gotNumberedPage#1#2#3#4{\oddNumberedPagefalse
-  \ifodd \if@twocolumn #3\else #2\fi\relax\oddNumberedPagetrue\fi
-  \advance\c@linenumber\@ne 
-  \ifcolumnwiselinenumbers
-     \subtractlinenumberoffset{#1}%
-  \else
-     \subtractlinenumberoffset{#4}%
-  \fi
-  }
-
-% You might want to run the pagewise mode with running line
-% numbers, or you might not.  It's your choice:
-
-\def\runningpagewiselinenumbers{%
-  \let\subtractlinenumberoffset\@gobble
-  }
-
-\def\realpagewiselinenumbers{%
-  \def\subtractlinenumberoffset##1{\advance\c@linenumber-##1\relax}%
-  }
-
-\realpagewiselinenumbers
-
-% For line number references, we need a protected call to
-% the whole procedure, with the requested line number stored
-% in the ~\c@linenumber~ counter.  This is what gets printed
-% to the aux-file to make a label:
-
-\def\thePagewiseLineNumber{\protect 
-       \getpagewiselinenumber{\the\c@linenumber}}%
-
-% And here is what happens when the label is refered to:
-
-\def\getpagewiselinenumber#1{{%
-  \c@linenumber #1\relax\testNumberedPage
-  \thelinenumber
-  }}
-
-%                                                                            %
-% A summary of all per line expenses:
-%                                                     \begin{description}\item
-% [CPU:]  The ~\output~ routine is called for each line,
-%         and the page-search is done.
-%                                                                        \item
-% [DISK:] One line of output to the aux-file for each
-%         numbered line
-%                                                                        \item
-% [MEM:]  One macro per page. Great improvement over v1.02,
-%         which had one control sequence per line in
-%         addition.  It blew the hash table after some five
-%         thousand lines. 
-%                                                            \end{description}
-%
-%                                                                \subsection{%
-%                  Twocolumn mode (New v3.06)
-%                                                                     \unskip}
-%
-% Twocolumn mode requires another patch to the ~\output~ 
-% routine, in order to print a column tag to the .aux 
-% file.
-
-\AtBeginDocument{% v4.2, revtex4.cls (e.g.). 
- % <- TODO v4.4+: Or better in \LineNoLaTeXOutput!? 
-  \let\@LN@orig@makecol\@makecol} 
-\def\@LN@makecol{%
-   \@LN@orig@makecol
-   \setbox\@outputbox \vbox{%
-      \boxmaxdepth \@maxdepth
-      \protected@write\@auxout{}{% 
-          \string\@LN@col{\if@firstcolumn1\else2\fi}%
-      }%
-      \box\@outputbox 
-   }% \vbox
-} %% TODO cf. revtexln.sty. 
-
-\def\@LN@col{\def\@LN@column} % v4.22, removed #1. 
-\@LN@col{1}
-
-%
-%                                                                \subsection{%
-%                  Numbering modulo $m$, starting at $f$ 
-%%                  Numbering modulo 5
-%                                                       \unskip}\label{ss:Mod} 
-% 
-% Most users want to have only one in five lines numbered.
-% ~\LineNumber~ is supposed to produce the outfit of the
-% line number attached to the line,  while ~\thelinenumber~
-% is used also for references, which should appear even if
-% they are not multiples of five.   
-% 
-% (New v4.00)                   Moreover, some users want to 
-% control which line number should be printed first. Support 
-% of this is now introduced here---see ~\firstlinenumber~ 
-% below.---~numline.sty~ by Michael Jaegermann and 
-% James Fortune offers controlling which \emph{final} 
-% line numbers should not be printed. What is 
-% it good for? We ignore this here until some user demands 
-% it.---Peter Wilson's ~ledmac.sty~ offers much different 
-% choices of line numbers to be printed, due to Wayne Sullivan. 
-% (/New v4.00) 
-% 
-% (New v4.22)   ~\c@linenumbermodulo~ is rendered a 
-% fake counter, as discussed since v4.00. So it can 
-% no longer be set by ~\setcounter~. ~\modulolinenumbers~ 
-% serves this purpose. Well, does anybody want to do 
-% what worked with ~\addtocounter~? (Then please tell 
-% me.)---At least, ~\value~ still works. For the same 
-% purpose I rename the fake `firstlinenumber' counter 
-% ~\n@...~ to ~\c@...~.                  (/New v4.22) 
-%                                                  \begin{old}\begin{verbatim}
-% % \newcount\c@linenumbermodulo % removed for v4.22 
-% \end{verbatim}
-%                                                                    \end{old}
-% 
-%% Removed for v4.22: 
-%% (UL)                                On my question why, e.g., 
-%% ~\chardef~ would not have sufficed, Stephan couldn't remember 
-%% exactly; guessed that he wanted to offer \LaTeX\ counter 
-%% facilities. However, the typical ones don't come this way. 
-%% So I'm quite sure that I will change this next time. 
-%% 
-%% However, I observed at least two times that users gave a very 
-%% high value to ~\c@linenumbermodulo~ in order to suppress 
-%% printing of the line number. One of these users preferred an 
-%% own way of handling line numbers, just wanted to use 
-%% ~\linelabel~ and ~ednotes.sty~ features. Should we support this? 
-%% I rather would like to advise them to 
-%% ~\let\makeLineNumber\relax~.      (/UL) 
-% 
-% (New v4.00)                                                             \par 
-% ~\themodulolinenumber~ waits for being declared 
-% ~\LineNumber~ by ~\modulolinenumbers~. (This has 
-% been so before, no change.) Here is how it 
-% looked before: 
-%                                                  \begin{old}\begin{verbatim}
-% % \def\themodulolinenumber{{\@tempcnta\c@linenumber
-% %   \divide\@tempcnta\c@linenumbermodulo
-% %   \multiply\@tempcnta\c@linenumbermodulo
-% %   \ifnum\@tempcnta=\c@linenumber\thelinenumber\fi
-% %   }}
-% \end{verbatim}
-%                                                                    \end{old} 
-% (UL)                   This was somewhat slow. This arithmetic 
-% happens at every line. This time I tend to declare an extra 
-%% TODO v4.4+ 
-% line counter (as opposed to my usual recommendations to use 
-% counters as rarely as possible) which is stepped every line. 
-% It could be incremented in the same way as ~\c@LN@truepage~ 
-% is incremented via ~\cl@page~! This is another point in favour 
-% of ~{linenumber}~ being a \LaTeX\ counter! 
-% When this new counter equals ~\c@linenumbermodulo~, it is reset, 
-% and ~\thelinenumber~ is executed.---It gets much slower by my 
-% support of controlling the first line number below. I should 
-% improve this.---On
-%%                                                   %% TODO v4.4+--pagewise!? 
-% the other hand, time expense means very little nowadays, 
-% while the number of \TeX\ counters still is limited. 
-% 
-% For the same purpose, moreover, attaching the line number 
-% box could be intercepted earlier (in ~\MakeLineNo~), 
-% without changing ~\LineNumber~. However, this may be 
-% bad for the latter's announcement as a wizard interface 
-% in section_\ref{s:UserCmds}.
-%% 
-%% I wonder about Stephan's group. Its only effect is that 
-%% ~\@tempcnta~ is restored after using it. What for is this? 
-%% I tend to remove the group braces.                            %% TODO v4.4+
-% (/UL) 
-% 
-% Here is the new code. It is very near to my ~lnopatch.sty~ 
-% code which introduced the first line number feature 
-% before.---I add starting with a ~\relax~ which is so often 
-% recommended---without understanding this really. At least, 
-% it will not harm.---Former group braces appear as 
-% ~\begingroup~/~\endgroup~ here. 
-
-\def\themodulolinenumber{\relax
-  \ifnum\c@linenumber<\c@firstlinenumber \else 
-    \begingroup 
-      \@tempcnta\c@linenumber
-      \advance\@tempcnta-\c@firstlinenumber 
-      \divide\@tempcnta\c@linenumbermodulo
-      \multiply\@tempcnta\c@linenumbermodulo
-      \advance\@tempcnta\c@firstlinenumber 
-      \ifnum\@tempcnta=\c@linenumber \thelinenumber \fi
-    \endgroup 
-  \fi 
-}
-
-% (/New v4.00) 
-% 
-% The user command to set the modulo counter:
-% (New v4.31) \dots\ a star variant is introduced to implement 
-% Hillel Chayim Yisraeli's idea to print the first line number 
-% after an interruption of the edited text by some editor's 
-% text, regardless of the modulo. If it is 1, it is printed only 
-% with ~\firstlinenumber{1}~. I.e., you use ~\modulolinenumbers*~
-% for the new feature, without the star you get the simpler 
-% behaviour that we have had so far. And you can switch back 
-% from the refined behaviour to the simple one by using 
-% ~\modulolinenumbers~ without the star.---This enhancement 
-% is accompanied by a new package option ~modulo*~ which just 
-% executes ~\modulolinenumbers*~ 
-% (subsection_\ref{ss:v3opts}).---`With ~\firstlinenumber{1}~' 
-% exactly means: `1' is printed if and only if the last 
-% ~\firstlinenumber~ before or in the paragraph that follows 
-% the ``interruption'' has argument `1' (or something 
-% \emph{expanding} to `1', or (to) something that \TeX\ 
-% ``reads'' as 1, e.g.: a \TeX\ count register storing 
-% 1).---At present, this behaviour may be unsatisfactory with 
-% pagewise line-numbering $\dots$ I'll make an experimental 
-% extra package if someone complains \dots
-
-\newcommand\modulolinenumbers{% 
-  \@ifstar
-    {\def\@LN@maybe@moduloresume{% 
-       \global\let\@LN@maybe@normalLineNumber
-                            \@LN@normalLineNumber}% 
-                                       \@LN@modulolinenos}% 
-    {\let\@LN@maybe@moduloresume\relax \@LN@modulolinenos}%
-}
-
-\global\let\@LN@maybe@normalLineNumber\relax 
-\let\@LN@maybe@moduloresume\relax 
-\gdef\@LN@normalLineNumber{% 
-  \ifnum\c@linenumber=\c@firstlinenumber \else 
-    \ifnum\c@linenumber>\@ne
-      \def\LineNumber{\thelinenumber}% 
-    \fi 
-  \fi 
-%%
-% ~\def~ instead of ~\let~ enables taking account of a 
-% redefinition of ~\thelinenumber~ in a present numbering 
-% environment (e.g.). 
-%%
-  \global\let\@LN@maybe@normalLineNumber\relax}
-
-% Instead of changing ~\LineNumber~ directly by 
-% ~LN@moduloresume~, these tricks enable ~\modulolinenumbers*~
-% to act as locally as I can make it. I don't know how to 
-% avoid that the output routine switches back to the normal 
-% modulo behaviour by a global change. (An ~\aftergroup~ may 
-% fail in admittedly improbable cases.)
-
-\newcommand*\@LN@modulolinenos[1][\z@]{%
-%% 
-% The definition of this macro is that of the former 
-% ~\modulolinenumbers~.                 (/New v4.31) 
-%%
-  \let\LineNumber\themodulolinenumber
-  \ifnum#1>\@ne 
-    \chardef                      % v4.22, note below 
-      \c@linenumbermodulo#1\relax
-  \else\ifnum#1=\@ne 
-%                                                  \begin{old}\begin{verbatim}
-% %    \def\LineNumber{\thelinenumber}%
-% \end{verbatim}
-%                                                                    \end{old} 
-% (New v4.00)         I am putting something here to enable 
-% ~\firstlinenumber~ with $~\c@linenumbermodulo~=1$. 
-% With ~lnopatch.sty~, a trick was offered for this purpose. 
-% It is now obsolete. 
-% 
-    \def\LineNumber{\@LN@ifgreat\thelinenumber}% 
-%% 
-% (/New v4.00) 
-%% 
-  \fi\fi
-  }
-
-% (New v4.00)                The default of ~\@LN@ifgreat~ is 
-
-\let\@LN@ifgreat\relax
-
-% The previous changes as soon as ~\firstlinenumber~ is used: 
-
-\newcommand*\firstlinenumber[1]{% 
-  \chardef\c@firstlinenumber#1\relax 
-%% 
-% No counter, little values allowed only---OK?---(UL) 
-% The change is local---OK? The good thing is that 
-% ~\global\firstlinenumber{~<number>~}~ works. Moreover, 
-% ~\modulolinenumbers~ acts locally as well.    (/UL)
-%
-% (New v4.31) 
-%% 
-  \let\@LN@ifgreat\@LN@ifgreat@critical} 
-
-\def\@LN@ifgreat@critical{%
-  \ifnum\c@linenumber<\c@firstlinenumber 
-    \expandafter \@gobble 
-  \fi}% 
-
-% (/New v4.31) 
-% 
-% The default 
-% value of ~\c@firstlinenumber~                                %% v4.31 
-% is 0. This is best for what one would expect from modulo 
-% printing. 
-
-\let\c@firstlinenumber=\z@
-
-% 
-% For usage and effects of ~\modulolinenumbers~ and            %% v4.31 
-% ~\firstlinenumbers~, please consult section_\ref{s:UserCmds}. 
-% Two details on ~\firstlinenumbers~ here: 
-% (i)_~\firstlinenumber~ acts on a paragraph if and only if 
-% (a)_the paragraph is broken into lines ``in line-numbering 
-% mode'' (after ~\linenumbers~, e.g.); 
-% (b)_it is the last occurrence of a ~\firstlinenumbers~ 
-% before or in the paragraph. 
-% (The practical applications of this that I can imagine 
-% don't seem appealing to me.) 
-% Cf._the explanation above of how ~\modulolinenumbers~ and 
-% ~\firstlinenumbers~ interact---for this and for (ii), 
-% which is concerned with possible arguments for 
-% ~\firstlinenumbers~. 
-% 
-% Note that the line numbers of the present section 
-% demonstrate the two devices.         (/New v4.00) 
-
-%%\setcounter{linenumbermodulo}{5}
-\chardef\c@linenumbermodulo=5      % v4.2; ugly? 
-\modulolinenumbers[1]
-
-% (New v4.22)       The new implementation through ~\chardef~ 
-% decreases the functionality and raises certain compatibility 
-% problems. I face this without fear. The maximum modulo value 
-% is now ~255~. I expect that this suffices for usual applications. 
-% However, some users have ``abused'' ~lineno.sty~ to get 
-% ~ednotes.sty~ features without line numbers, so have set the 
-% modulo to a value beyond the total number of lines in their 
-% edition. This ought to be replaced by 
-% ~\let\makeLineNumber\relax~.          (/New v4.22) 
-% 
-%                                                                   \section{% 
-%               Package options
-%                                                       \unskip}\label{s:Opts} 
-% 
-% (New v4.1) 
-% The last heading formerly was the heading of what is now 
-% subsection_\ref{ss:v3opts}. The options declared there were 
-% said to execute user commands only. This was wrong already 
-% concerning ~displaymath~ and ~hyperref~. At least, however, 
-% these options were no or almost no occasion to skip definitions 
-% or allocations. This is different with the options that we now 
-% insert. 
-% 
-%% (New v4.2)   v4.00 moved the ``options'' below the 
-%% ``extensions''. This was bad with ~\do@mlineno~ in 
-%% subsection_\ref{ss:v3opts} which is to control 
-%% subsection_\ref{ss:display}---undone here.  (/New v4.2) 
-%
-%                                                                \subsection{%
-%               Extended referencing to line numbers. (v4.2)
-%                                                                     \unskip}
-% This subsection explains and declares package option ~addpageno~.   %% v4.31
-% 
-% If a line to whose number you refer by ~\ref~ is not on the 
-% present page, it may be useful to add the number of the page 
-% on which the line occurs---and perhaps it should not be added 
-% otherwise. In general, you could use the Standard \LaTeX\ 
-% package varioref for this. However, the latter usually 
-% produces verbose output like `on the preceding page'---
-% unless costumized---, while in critical editions, e.g., one 
-% may prefer just adding the page number and some mark on the 
-% left of the line number, irrespectively of how far the page is 
-% apart etc. To support this, package option ~addpageno~ 
-% provides a command ~\vpagelineref~ to be used in place of 
-% ~\ref~. This produces, e.g., `34.15' when referring to line_15 
-% on page_34 while the present page is not 34. You can customize 
-% the outcome, see the package file ~vplref.sty~ where the code 
-% and further details are. You may conceive of 
-% ~\vpagelineref~ as a certain customization of varioref's 
-% ~\vref~. 
-% 
-% This implies that option ~addpageno~ requires the files 
-% ~vplref.sty~ and ~varioref.sty~. ~addpageno~ automatically 
-% loads both of them. Yet you can also load ~varioref.sty~ 
-% on your own to use its package options. 
-% 
-% Of course, you might better introduce a shorter command name 
-% for ~\vpagelineref~ for your work, while we cannot predict 
-% here what shorthand will fit your work. E.g., 
-% ~\newcommand{\lref}{\vpagelineref}~.
-% 
-% If you really want to add the page number in \emph{any} case, 
-% use, e.g., some ~\myref~ instead of ~\ref~, after 
-%   \[~newcommand*{\myref}{\pageref{#1}.\ref{#1}}~\] 
-% or what you like. You don't need the ~addpageno~ option in 
-% this case. 
-% 
-% ~addpageno~ is due to a suggestion by Sergei Mariev. 
-
-\DeclareOption{addpageno}{% 
-  \AtEndOfPackage{\RequirePackage{vplref}[2005/04/25]}} 
-
-%                                                                \subsection{% 
-%               \scs{linelabel} in math mode 
-%                                                   \unskip}\label{ss:MathRef}
-% 
-% We have made some first steps towards allowing ~\linelabel~ in 
-% math mode. Because our code for this is presently experimental, 
-% we leave it to the user to decide for the experiment by calling 
-% option ~mathrefs~. We are in a hurry now and thus leave the 
-% code, explanations, and discussion in the separate package 
-% ~ednmath0.sty~. Maybe we later find the time to improve the 
-% code and move the relevant content of ~ednmath0.sty~ to here. 
-% The optimal situation would be to define ~\linelabel~ from 
-% the start so it works in math mode, omitting the ~mathrefs~ 
-% option. 
-% 
-% Actually, this package even provides adjustments for analogously 
-% allowing ~ednotes.sty~ commands in math mode. Loading the package 
-% is postponed to ~\AtBeginDocument~ when we know whether these 
-% adjustments are needed. 
-
-\DeclareOption{mathrefs}{\AtBeginDocument 
-  {\RequirePackage{ednmath0}[2004/08/20]}} 
-
-% 
-%                                                                \subsection{% 
-%               Arrays, tabular environments (Revised v4.11)
-%                                                       \unskip}\label{ss:Tab} 
-% 
-% This subsection explains and declares package options               %% v4.31
-% ~edtable~, ~longtable~, and ~nolongtablepatch~.
-%
-% The standard \LaTeX\ tabular environments come as single 
-% boxes, so the ~lineno.sty~ versions before v4.00 treated them as 
-% (parts of) single lines, printing (at most) one line number 
-% beside each and stepping the line number counter once only. 
-% Moreover, ~\linelabel~s got lost. Of course, tables are 
-% usually so high that you will want to treat each row like a 
-% line. (Christian Tapp even desires that the lines of table 
-% entries belonging to a single row are treated like ordinary 
-% lines.) Footnotes get lost in such environments as well, which 
-% was bad for ~ednotes.sty~.
-% 
-% We provide adjustments to count lines, print their numbers 
-% etc.\ as desired at least for \emph{some} \LaTeX\ tabular 
-% environments. (Like with other details, ``some'' is to some 
-% extent explained in ~edtable.sty~.) We do this similarly as 
-% with option ~mathrefs~ before.               We leave code 
-% and explanations in the separate package ~edtable.sty~. 
-% (For wizards: this package provides adjustments for 
-% ~ednotes.sty~ as well. However, in the present case we don't try 
-% to avoid them unless ~ednotes.sty~ is loaded.) 
-% Package option ~edtable~ 
-% defines---by loading ~edtable.sty~---an environment ~{edtable}~ 
-% which is able to change some \LaTeX\ tabular environments 
-% with the desired effects. (v4.11: ~edtable.sty~ v1.3 counts 
-% \LaTeX's ~{array}~ [etc.\@] as a ``tabular environment'' as 
-% well.) 
-% 
-% The ~{edtable}~ environment doesn't help with ~longtable.sty~, 
-% however. To make up for this, ~{longtable}~ is adjusted in a 
-% different way---and this happens only when another ~lineno.sty~ 
-% option ~longtable~ is called. In this case, option ~edtable~ 
-% needn't be called explicitly: option ~longtable~ works as if 
-% ~edtable~ had been called. 
-% 
-% Now, we are convinced that vertical spacing around 
-% ~{longtable}~ works wrongly---see \LaTeX\ bugs database 
-% tools/3180 and 3485, or see explanations in the package 
-% ~ltabptch.sty~ (which is to be obtained from CTAN folder
-% \path{macros/latex/ltabptch}). Our conviction is so strong
-% that the ~longtable~ option loads---after ~longtable.sty~---the
-% patch package ~ltabptch.sty~. If the user doesn't want this
-% (maybe preferring her own arrangement with the vertical 
-% spacing), she can forbid it by calling ~nolongtablepatch~. 
-% 
-% The following code just collects some choices, which are 
-% then executed in section_\ref{ss:ExOpt}. We use an ~\if...~ 
-% without ~\newif~ since ~\if...true~ and ~\if...false~ 
-% would occur at most two times and only within the present 
-% package. (~\AtEndOfClass{\RequirePackage{edtable}}~ 
-% could be used instead, I just overlooked this. Now I don't 
-% change it because it allows to change the version requirement 
-% at one place only.)
-
-\let\if@LN@edtable\iffalse 
-
-\DeclareOption{edtable}{\let\if@LN@edtable\iftrue}
-
-\DeclareOption{longtable}{\let\if@LN@edtable\iftrue 
-  \PassOptionsToPackage{longtable}{edtable}}
-
-\DeclareOption{nolongtablepatch}{% 
-  \PassOptionsToPackage{nolongtablepatch}{edtable}}
-
-% (/New v4.1) 
-% 
-%                                                                \subsection{% 
-%               Switch among settings 
-%                                                    \unskip}\label{ss:v3opts}
-% 
-% There is a bunch of package options that execute                     %% v4.2 
-%% There is a bunch of package options, all of them executing 
-%% executing only user commands (see below). %% Cf. start of section. 
-% user commands only. 
-%
-% Options ~left~ (~right~) put the line numbers on the left
-% (right) margin.  This works in all modes.  ~left~ is the
-% default.
-
-\DeclareOption{left}{\leftlinenumbers*}
-
-\DeclareOption{right}{\rightlinenumbers*}
-
-% Option ~switch~ (~switch*~) puts the line numbers on the
-% outer (inner) margin of the text.   This requires running
-% the pagewise mode,  but we turn off the page offset
-% subtraction, getting sort of running numbers again.  The
-% ~pagewise~ option may restore true pagewise mode later.
-
-\DeclareOption{switch}{\setpagewiselinenumbers
-                       \switchlinenumbers
-                       \runningpagewiselinenumbers}
-
-\DeclareOption{switch*}{\setpagewiselinenumbers
-                        \switchlinenumbers*%
-                        \runningpagewiselinenumbers}
-
-% In twocolumn mode, we can switch the line numbers to 
-% the outer margin, and/or start with number 1 in each
-% column.  Margin switching is covered by the ~switch~ 
-% options.
-
-\DeclareOption{columnwise}{\setpagewiselinenumbers
-                           \columnwiselinenumberstrue
-                           \realpagewiselinenumbers}
-
-% The options ~pagewise~ and ~running~ select the major
-% linenumber mechanism.  ~running~ line numbers refer to a real
-% counter value, which can be reset for any paragraph,
-% even getting  multiple paragraphs on one page starting
-% with line number one.  ~pagewise~ line numbers get a
-% unique hidden number within the document,  but with the
-% opportunity to establish the page on which they finally
-% come to rest.  This allows the subtraction of the page
-% offset, getting the numbers starting with 1 on top of each
-% page, and margin switching in twoside formats becomes
-% possible.  The default mode is ~running~.  
-%
-% The order of declaration of the options is important here
-% ~pagewise~ must come after ~switch~, to overide running
-% pagewise mode. ~running~ comes last, to reset the running
-% line number mode, e.g, after selecting margin switch mode
-% for ~pagewise~ running.  Once more, if you specify all
-% three of the options ~[switch,pagewise,running]~, the
-% result is almost nothing, but if you later say
-% ~\pagewiselinenumbers~,  you get margin switching, with
-% real pagewise line numbers.
-%
-\DeclareOption{pagewise}{\setpagewiselinenumbers
-                         \realpagewiselinenumbers}
-
-\DeclareOption{running}{\setrunninglinenumbers}
-
-% The option ~modulo~ causes only those linenumbers to be
-% printed which are multiples of five. 
-
-\DeclareOption{modulo}{\modulolinenumbers\relax}
-
-% Option ~modulo*~ modifies ~modulo~ in working like 
-% ~\modulolinenumbers*~---see section_\ref{s:UserCmds}. 
-
-\DeclareOption{modulo*}{\modulolinenumbers*\relax}
-
-% The package option ~mathlines~ switches the behavior of
-% the ~{linenomath}~ environment with its star-form.
-% Without this option, the ~{linenomath}~ environment does
-% not number the lines of the display, while the star-form
-% does.  With this option, its just the opposite.
-%
-%%% 1999-06-10: renamed ~displaymath~ to ~mathlines~.
-
-\DeclareOption{mathlines}{\linenumberdisplaymath}
-
-% ~displaymath~ now calls for wrappers of the standard 
-% \LaTeX\ display math environment.  This was previously 
-% done by ~mlineno.sty~.
-% 
-% (New v4.3) Option `displaymath' becomes default according 
-% to Erik \mbox{Luijten}'s suggestion. I was finally convinced 
-% of this as soon as I discovered how to avoid a spurious line 
-% number above ~\begin{linenomath}~ (subsection_\ref{ss:DM}). 
-% ~\endlinenomath~ provides ~\ignorespaces~, so what could go 
-% wrong now? 
-
-\DeclareOption{displaymath}{\PackageWarningNoLine{lineno}{%
-                Option [displaymath] is obsolete -- default now!}} 
-%% 
-%%\let\do@mlineno\relax
-%%\DeclareOption{displaymath}{\let\do@mlineno\@empty}
-% (/New v4.3) 
-% 
-%                                                                \subsection{%
-%               Compatibility with \texttt{hyperref}      %% own subsec. v4.3. 
-%                                                                     \unskip}
-% The ~hyperref~ package, via ~nameref~, requires three more 
-% groups in the second argment of a ~\newlabel~.  Well, why 
-% shouldn't it get them?  (New v3.07) The presence of the
-% ~nameref~ package is now detected automatically
-% ~\AtBeginDocument~. (/New v3.07) (Fixed in v3.09)  We try
-% to be smart, and test ~\AtBeginDocument~ if the ~nameref~
-% package is loaded, but ~hyperref~ postpones the loading of
-% ~nameref~ too, so this is all in vain.
-% 
-% (New v4.3)  But we can also test at the first ~\linelabel~. 
-% Regarding the error-message for misplaced ~\linelabel~ from v4.11: 
-% previously, ~\linenumbers~ rendered ~\linelabel~ the genuine 
-% version of ~\linelabel~ from the start on. This doesn't work 
-% now, since ~\@LN@linelabel~ may change its meaning after the 
-% first ~\linenumbers~ and before a next one (if there is some). 
-%     (/New v4.3) 
-
-\DeclareOption{hyperref}{\PackageWarningNoLine{lineno}{%
-                Option [hyperref] is obsolete. 
-  \MessageBreak The hyperref package is detected automatically.}}
-
-\AtBeginDocument{% 
-  \@ifpackageloaded{nameref}{%
-%% 
-% (New v4.3)  ``Global'' is merely ``symbolic'' ~\AtBeginDoc...~. 
-% If ~nameref~ is not detected here, the next ~\@LN@linelabel~ 
-% will do almost the same, then globally indeed. 
-%%
-    \gdef\@LN@ExtraLabelItems{{}{}{}}% 
-  }{%
-    \global\let\@LN@@linelabel\@LN@linelabel 
-    \gdef\@LN@linelabel{% 
-%% 
-% ~\@ifpackageloaded~ is ``preamble only'', its---very 
-% internal---preamble definition is replicated here: 
-%%
-     \expandafter 
-      \ifx\csname ver@nameref.sty\endcsname\relax \else 
-        \gdef\@LN@ExtraLabelItems{{}{}{}}% 
-      \fi 
-%% 
-% Now aim at the ``usual'' behaviour: 
-%% 
-      \global\let\@LN@linelabel\@LN@@linelabel 
-      \global\let\@LN@@linelabel\relax 
-      \@LN@linelabel
-    }% 
-  }%
-} 
-
-% (/New v4.3) 
-% 
-% (New v4.1) 
-%                                                                \subsection{% 
-%               A note on calling so many options 
-%                                                                     \unskip} 
-% 
-% The number of package options may stimulate worrying about how to 
-% \emph{enter} all the options that one would like to use---they may 
-% not fit into one line. Fortunately, you can safely break code lines 
-% after the commas separating the option names in the ~\usepackage~
-% command (no comment marks needed). 
-% 
-%                                                                \subsection{% 
-%               Execute options
-%                                                     \unskip}\label{ss:ExOpt}
-% 
-% We stop declaring options and execute the ones that are 
-% called by the user.       (/New v4.1)
-
-\ProcessOptions
-
-% (New v4.1)        Now we know whether ~edtable.sty~ is wanted 
-% and (if it is) with which options it is to be called. 
-
-\if@LN@edtable \RequirePackage{edtable}[2005/03/07] \fi 
-
-% (/New v4.1) 
-% 
-%                                                                   \section{%
-%               Former package extensions 
-%                                                         \label{s:Xt}\unskip}
-%
-% The extensions in this section were previously supplied 
-% in separate ~.sty~ files. 
-%
-%                                                                \subsection{%
-%              $display math$
-%                                                   \unskip}\label{ss:display}
-%% (New v4.32) 
-% (New v4.3)    From now on, you no longer need to type 
-% the ~{linenomath}~ environment with the ~\[~, ~{equation}~, 
-% and ~{eqnarray}~ environments---and you no longer need to 
-% use the former package option ~displaymath~ for this feature. 
-%                                                   (/New v4.3) 
-%% (/New v4.32) 
-% 
-%  The standard \LaTeX\ display math environments are
-%  wrapped in a ~{linenomath}~ environment.
-%
-% (New 3.05)  The ~[fleqn]~ option of the standard
-% \LaTeX\ classes defines the display math
-% environments such that line numbers appear just
-% fine.  Thus, we need not do any tricks when
-% ~[fleqn]~ is loaded, as indicated by presents of
-% the ~\mathindent~ register.           (/New 3.05)
-%
-% (New 3.05a)  for ~{eqnarray}~s we rather keep the
-% old trick.                            (/New 3.05a)
-%
-% (New 3.08) Wrap ~\[~ and ~\]~ into ~{linenomath}~, 
-% instead of ~{displaymath}~.  Also save the definition
-% of ~\equation~, instead of replicating the current 
-% \LaTeX\ definition.                    (/New 3.08)
-
-%%\ifx\do@mlineno\@empty
- \@ifundefined{mathindent}{
-
-%% \AtBeginDocument{% 
-  \let\LN@displaymath\[%
-  \let\LN@enddisplaymath\]%
-  \renewcommand\[{\begin{linenomath}\LN@displaymath}%
-  \renewcommand\]{\LN@enddisplaymath\end{linenomath}}%
-% 
-  \let\LN@equation\equation
-  \let\LN@endequation\endequation
-  \renewenvironment{equation}%
-     {\linenomath\LN@equation}%
-     {\LN@endequation\endlinenomath}%
-%% }
-
- }{}% \@ifundefined{mathindent} -- 3rd arg v4.2, was \par! 
-
-%%\AtBeginDocument{%
-  \let\LN@eqnarray\eqnarray
-  \let\LN@endeqnarray\endeqnarray
-  \renewenvironment{eqnarray}%
-     {\linenomath\LN@eqnarray}%
-     {\LN@endeqnarray\endlinenomath}%
-%%}
-  
-%%\fi
-
-% (UL)        Indeed. The \LaTeX\ macros are saved for 
-% unnumbered mode, which is detected by ~\linenomath~. 
-% (/UL) 
-%
-%                                                                \subsection{%
-%      Line numbers in internal vertical mode
-%                                                       \unskip}\label{ss:ILN}
-%
-% The command ~\internallinenumbers~ adds line numbers in 
-% internal vertical mode, but with limitations: we assume
-% fixed baseline skip.
-%
-% (v4.22)       v3.10 provided a global (~\global\advance~) 
-% as well as a local version (star-form, using 
-% ~\c@internallinenumber~). ~\resetlinenumbers~ acted 
-% locally and was here used with the global version---save 
-% stack danger, \TeX book p._301---in v4.00 I 
-% disabled the global version therefore. Now I find that 
-% it is better to keep a global version, and the now global 
-% ~\resetlinenumbers~ is perfect for this. The global version 
-% allows continuing the ``internal'' numbers in the ensuing 
-% ``external'' text, and---unless reset by brackets 
-% argument---continuing the above series of line numbers. 
-% As with v3.10, the local version always starts with 
-% line number one. A new ~\@LN@iglobal~ steps ~\global~ly 
-% in the global version, otherwise it is ~\relax~. 
-% (I also remove all my stupid discussions as of v4.00. 
-% And I use ~\newcommand~.)     (v4.22)
-
-\let\@LN@iglobal\global                           % v4.22 
-
-\newcommand\internallinenumbers{\setrunninglinenumbers 
-     \let\@@par\internallinenumberpar
-     \ifx\@par\@@@par\let\@par\internallinenumberpar\fi
-     \ifx\par\@@@par\let\par\internallinenumberpar\fi
-     \ifx\@par\linenumberpar\let\@par\internallinenumberpar\fi
-     \ifx\par\linenumberpar\let\par\internallinenumberpar\fi
-     \@ifnextchar[{\resetlinenumber}%]
-                 {\@ifstar{\let\c@linenumber\c@internallinenumber
-                           \let\@LN@iglobal\relax % v4.22
-                           \c@linenumber\@ne}{}}%
-     }
-
-\let\endinternallinenumbers\endlinenumbers
-\@namedef{internallinenumbers*}{\internallinenumbers*}
-\expandafter\let\csname endinternallinenumbers*\endcsname\endlinenumbers
-
-\newcount\c@internallinenumber
-\newcount\c@internallinenumbers
-
-\newcommand\internallinenumberpar{% 
-     \ifvmode\@@@par\else\ifinner\@@@par\else\@@@par
-     \begingroup
-        \c@internallinenumbers\prevgraf
-        \setbox\@tempboxa\hbox{\vbox{\makeinternalLinenumbers}}%
-        \dp\@tempboxa\prevdepth
-        \ht\@tempboxa\z@
-        \nobreak\vskip-\prevdepth
-        \nointerlineskip\box\@tempboxa
-     \endgroup 
-     \fi\fi
-     }
-
-\newcommand\makeinternalLinenumbers{% 
-   \ifnum\c@internallinenumbers>\z@               % v4.2
-   \hb@xt@\z@{\makeLineNumber}% 
-   \@LN@iglobal                                   % v4.22 
-     \advance\c@linenumber\@ne
-   \advance\c@internallinenumbers\m@ne
-   \expandafter\makeinternalLinenumbers\fi
-   }
- % TODO v4.4+: star: line numbers right!? cf. lnocapt.sty
-
-% 
-%                                                                \subsection{%
-%      Line number references with offset
-%                                                                     \unskip}
-%
-% This extension defines macros to refer to line
-% numbers with an offset, e.g., to refer to a line
-% which cannot be labeled directly (display math).
-% This was formerly knows as ~rlineno.sty~.
-%
-% To refer to a pagewise line number with offset:
-%                                                                \begin{quote}
-%   ~\linerefp[~<OFFSET>~]{~<LABEL>~}~
-%                                                                  \end{quote}
-% To refer to a running line number with offset:
-%                                                                \begin{quote}
-%   ~\linerefr[~<OFFSET>~]{~<LABEL>~}~
-%                                                                  \end{quote}
-% To refer to a line number labeled in the same mode as currently
-% selected:
-%                                                                \begin{quote}
-%   ~\lineref[~<OFFSET>~]{~<LABEL>~}~
-%                                                                  \end{quote}
-
-\newcommand\lineref{%
-  \ifx\c@linenumber\c@runninglinenumber
-     \expandafter\linerefr
-  \else
-     \expandafter\linerefp
-  \fi
-}
-
-\newcommand*\linerefp[2][\z@]{{%
-   \let\@thelinenumber\thelinenumber
-   \edef\thelinenumber{\advance\c@linenumber#1\relax
-                       \noexpand\@thelinenumber}%
-   \ref{#2}%
-}}
-
-% This goes deep into \LaTeX's internals.
-
-\newcommand*\linerefr[2][\z@]{{%
-   \def\@@linerefadd{\advance\c@linenumber#1}%
-   \expandafter\@setref\csname r@#2\endcsname
-   \@linerefadd{#2}%
-}}
-
-\newcommand*\@linerefadd[2]{\c@linenumber=#1\@@linerefadd\relax
-                            \thelinenumber}
-
-%%                           TODO v4.4+: Insert `LN' in internal command names? 
-% 
-%                                                                 \subsection{%
-%      Numbered quotation environments
-%                                                                     \unskip}
-%
-% The ~{numquote}~ and ~{numquotation}~
-% environments are like ~{quote}~ and
-% ~{quotation}~, except there will be line
-% numbers.  
-% 
-% An optional argument gives the number to count
-% from.  A star ~*~ (inside or outside the closing
-% ~}~) prevent the reset of the line numbers.
-% Default is to count from one.
-% 
-% (v4.22: A local version using ~\c@internallinenumber~ 
-% might be useful, see subsection_\ref{ss:ILN}.)                 %% TODO v4.4+
-
-\newcommand\quotelinenumbers
-   {\@ifstar\linenumbers{\@ifnextchar[\linenumbers{\linenumbers*}}}
-
-\newdimen\quotelinenumbersep
-\quotelinenumbersep=\linenumbersep
-\let\quotelinenumberfont\linenumberfont
-
-\newcommand\numquotelist
-   {\leftlinenumbers
-    \linenumbersep\quotelinenumbersep
-    \let\linenumberfont\quotelinenumberfont
-    \addtolength{\linenumbersep}{-\@totalleftmargin}%
-    \quotelinenumbers
-   }
-
-\newenvironment{numquote}     {\quote\numquotelist}{\endquote}
-\newenvironment{numquotation} {\quotation\numquotelist}{\endquotation}
-\newenvironment{numquote*}    {\quote\numquotelist*}{\endquote}
-\newenvironment{numquotation*}{\quotation\numquotelist*}{\endquotation}
-
-% 
-%                                                                \subsection{%
-%      Frame around a paragraph
-%                                                                     \unskip}
-%
-% The ~{bframe}~ environment draws a frame around
-% some text, across page breaks, if necessary.
-%
-% This works only for plain text paragraphs,
-% without special height lines. All lines must be
-% ~\baselineskip~ apart, no display math.
-
-\newenvironment{bframe}
-  {\par
-   \@tempdima\textwidth
-   \advance\@tempdima 2\bframesep
-   \setbox\bframebox\hb@xt@\textwidth{%
-      \hskip-\bframesep
-      \vrule\@width\bframerule\@height\baselineskip\@depth\bframesep
-      \advance\@tempdima-2\bframerule
-      \hskip\@tempdima
-      \vrule\@width\bframerule\@height\baselineskip\@depth\bframesep
-      \hskip-\bframesep
-   }%
-   \hbox{\hskip-\bframesep
-         \vrule\@width\@tempdima\@height\bframerule\@depth\z@}%
-   \nointerlineskip
-   \copy\bframebox
-   \nobreak
-   \kern-\baselineskip
-   \runninglinenumbers
-   \def\makeLineNumber{\copy\bframebox\hss}%
-  }
-  {\par
-   \kern-\prevdepth
-   \kern\bframesep
-   \nointerlineskip
-   \@tempdima\textwidth
-   \advance\@tempdima 2\bframesep
-   \hbox{\hskip-\bframesep
-         \vrule\@width\@tempdima\@height\bframerule\@depth\z@}%
-  }
-
-\newdimen\bframerule
-\bframerule=\fboxrule
-
-\newdimen\bframesep
-\bframesep=\fboxsep
-
-\newbox\bframebox
- 
-% 
-% 
-%                                                                   \section{%
-%               Move \scs{vadjust} items (New v4.00)
-%                                                      \unskip}\label{s:MVadj} 
-% 
-% This section completes reviving ~\pagebreak~, ~\nopagebreak~, 
-% ~\vspace~, and the star and optional form of ~\\~. This was 
-% started in section_\ref{ss:output} and resumed in 
-% section_\ref{ss:MLN} and subsection_\ref{ss:calls}.
-% The problem was explained in section_\ref{ss:output}: 
-% ~\vadjust~ items come out at a bad position, and the 
-% \LaTeX\ commands named before work with ~\vadjust~ indeed. 
-% Our solution was sketched there as well. 
-% 
-% According to the caveat in subsection_\ref{ss:OnOff} concerning
-% ~\ifLineNumbers~, the \LaTeX\ commands enumerated may go 
-% wrong if you switch line numbering inside or at the end of 
-% a paragraph. 
-%%                                                               %% TODO v4.4+
-% 
-%                                                                \subsection{%
-%               Redefining \scs{vadjust}
-%                                                     \unskip}\label{ss:PVadj}
-% 
-% ~\vadjust~ will temporarily be changed into the following 
-% command. 
-
-\def\PostponeVadjust#1{% 
-  \global\let\vadjust\@LN@@vadjust 
-%% 
-% This undoes a ~\global\let\vadjust\PostponeVadjust~ which will 
-% start each of the refined \LaTeX\ commands. The ~\global~s 
-% are most probably superfluous. They might be useful should one 
-% ~\vadjust~ appear in a group starting after the change of 
-% ~\vadjust~ into ~\PostponeVadjust~. 
-% (UL) Even the undoing may be superfluous, cf._discussion 
-% in section_\ref{ss:ReDef} below.  (UL) 
-%% 
-  \vadjust{\penalty-\@Mppvacodepen}% 
-  \g@addto@macro\@LN@vadjustlist{#1\@lt}% 
-}
-\let\@LN@@vadjust\vadjust 
-\global\let\@LN@vadjustlist\@empty 
-\global\let\@LN@do@vadjusts\relax 
-
-% These ~\global~s are just to remind that 
-% all the changes of the strings after ~\let~ should be 
-% ~\global~ (\TeX book p._301). ~\@LN@vadjustlist~ collects 
-% the ~\vadjust~ items of a paragraph. ~\PassVadjustList~ 
-% tears one ~\vadjust~ item for the current line out of 
-% ~\@LN@vadjustlist~ and puts it into ~\@LN@do@vadjusts~. 
-% The latter is encountered each line in ~\MakeLineNo~ 
-% (section_\ref{ss:MLN}), while those \LaTeX\ ~\vadjust~ 
-% commands will come rather rarely. So I decided that 
-% ~\@LN@do@vadjust~ is ~\relax~ until a ~\vadjust~ item 
-% is waiting. In the latter case, ~\@LN@do@vadjusts~ 
-% is turned into a list macro which resets itself to 
-% ~\relax~ when the other contents have been placed in 
-% the vertical list.---~\PassVadjustList~ is invoked by 
-% the output routine (section_\ref{ss:output}), so the 
-% ~\box255~ must be put back. 
-
-\def\PassVadjustList{% 
-  \unvbox\@cclv 
-  \expandafter \@LN@xnext \@LN@vadjustlist \@@ 
-                          \@tempa \@LN@vadjustlist 
-  \ifx\@LN@do@vadjusts\relax 
-    \gdef\@LN@do@vadjusts{\global\let\@LN@do@vadjusts\relax}% 
-  \fi 
-  \expandafter \g@addto@macro \expandafter \@LN@do@vadjusts 
-    \expandafter {\@tempa}% 
-} 
-
-% 
-%                                                                \subsection{%
-%               Redefining the \LaTeX\ commands 
-%                                                     \unskip}\label{ss:ReDef}
-% 
-% Now we change ~\pagebreak~ etc.\ 
-% so that they use ~\PostponeVadjust~ in place of ~\vadjust~. 
-% We try to do this as independently as possible of the 
-% implementation of the \LaTeX\ commands to be redefined. 
-% Therefore, we don't just copy macro definition code from any 
-% single implementation (say, latest \LaTeX) and insert our 
-% changes, but attach a conditional 
-% ~\global\let\vadjust\PostponeVadjust~ 
-% to their left ends in a way which should work rather 
-% independantly of their actual code. 
-% However, ~\vadjust~ should be the primitive again after 
-% execution of the command. So the ~\global\let...~ may be used 
-% only if it's guaranteed that a ~\vadjust~ is near.---(UL) 
-% Sure? In line numbering mode, probably each ~\vadjust~ 
-% coming from a \LaTeX\ command should be ~\PostponeVadjust~. 
-% ~\marginpar~s and floats seem to be the only cases which 
-% are not explicitly dealt with in the present section. 
-% This would be a way to avoid ~\@LN@nobreaktrue~! 
-% Of course, the ~\vadjust~s that the present package uses 
-% then must be replaced by ~\@LN@@vadjust~.---Maybe 
-% next time.      (/UL) 
-%%                                                               %% TODO v4.4+ 
-% 
-% The next command and something else will be added to the 
-% \LaTeX\ commands we are concerned with here. 
-
-\DeclareRobustCommand\@LN@changevadjust{% 
-  \ifvmode\else\ifinner\else 
-    \global\let\vadjust\PostponeVadjust 
-  \fi\fi 
-} 
- 
-% (UL) What about math mode? Math display? Warn? (/UL) 
-%%                                                               %% TODO v4.4+
-% 
-% ~\@tempa~ will now become a two place macro which adds first 
-% argument (single token), enclosed by ~\ifLineNumbers~\,\dots
-% ~\fi~ to the left of second argument. As long as we need it, 
-% we can't use the star form of ~\DeclareRobustCommand~ or 
-% the like, because AMS-\LaTeX\ uses ~\@tempa~ for ~\@ifstar~. 
-% (New v4.41) And for the same reason, that ~\CheckCommand*~ 
-% had to be raised! (/New v4.41)
-
-\CheckCommand*\@parboxrestore{\@arrayparboxrestore\let\\\@normalcr}
-
-\def\@tempa#1#2{% 
-  \expandafter \def \expandafter#2\expandafter{\expandafter
-    \ifLineNumbers\expandafter#1\expandafter\fi#2}% 
-} 
-
-% (UL)              This ~\ifLineNumber~ can be fooled by 
-% ~\linenumbers~ ahead etc. It might be better to place 
-% a signal penalty in any case and let the output routine 
-% decide what to do. 
-%% 
-%% And when this has been done, remove warnings about this. 
-% (/UL) 
-% 
-% We use the occasion to switch off linenumbers where they 
-% don't work anyway and where we don't want them, 
-% especially in footnotes: 
-
-\@tempa\nolinenumbers\@arrayparboxrestore 
-
-% We hope this suffices $\dots$ let's check one thing 
-% at least: [(New v4.41) see ~\CheckCommand~ above (/New v4.41)]
-% 
-% Now for the main theme of the section. 
-% The next lines assume that ~\vspace~, ~\pagebreak~, and 
-% ~\nopagebreak~ use ~\vadjust~ whenever they occur outside 
-% vertical mode; moreover, that they don't directly read 
-% an argument. Indeed ~\pagebreak~ and ~\nopagebreak~ first 
-% call something which tests for a left bracket ahead, 
-% while ~\vspace~ first tests for a star. 
-
-\@tempa\@LN@changevadjust\vspace 
-\@tempa\@LN@changevadjust\pagebreak 
-\@tempa\@LN@changevadjust\nopagebreak 
-
-% ~\\~, however, uses ~\vadjust~ only in star or optional form. 
-% We relax independency of implementation in assuming 
-% that ~\@normalcr~ is the fragile version of ~\\~ 
-% (and we use ~\@ifstar~!). 
-%%
-%% \@ifstar reimplemented 1995/10/16, but seems to be much older. 
-%% TODO v4.4+: 
-%% \def\@LN@cr{% 
-%%   \@ifnextchar*{\@LN@changevadjust\@normalcr}% 
-%%      {\@ifnextchar[{\@LN@changevadjust\@normalcr}\@normalcr}% 
-%% } 
-%% ---same number of tokens, expansion step less. 
-%%
-% (Using a copy of ~\\~ would be safer, but an ugly repetition 
-% of ~\protect~.) 
-%%                                                               %% TODO v4.4+ 
-
-\DeclareRobustCommand\\{% 
-  \ifLineNumbers 
-    \expandafter \@LN@cr 
-  \else 
-    \expandafter \@normalcr 
-  \fi 
-} 
-\def\@LN@cr{% 
-  \@ifstar{\@LN@changevadjust\@normalcr*}% 
-          {\@ifnextchar[{\@LN@changevadjust\@normalcr}\@normalcr}% 
-} 
-
-% Moreover we hope that ~\newline~ never leads to a ~\vadjust~, 
-% although names of some commands invoked by ~\\~ contain 
-% ~newline~. At last, this seems to have been OK since 1989 or 
-% even earlier. 
-% 
-%                                                        \modulolinenumbers[1]
-%                                                          \firstlinenumber{0} 
-% Let's have a few tests.\vspace*{.5\baselineskip} 
-% Testing ~\pagebreak~ and ~\nopagebreak~ would be too expensive 
-% here, but---oops!---we have just experienced a successful 
-% ~\vspace*{.5\baselineskip}~. A 
-% ~\\*[.5\baselineskip]~\\*[.5\baselineskip] may look even more 
-% drastical, but this time we are happy about it. Note that the 
-% line numbers have moved with the lines. Without our changes, 
-% one line number\vadjust{\kern.5\baselineskip} would have 
-% ``anticipated'' the move of the next line, just as you can 
-% observe it now. 
-% (/New v4.00) 
-% 
-%                                                           \switchlinenumbers 
-% 
-%                                                                \subsection{% 
-%               Reminder on obsoleteness 
-%                                                                     \unskip} 
-% 
-% (New v4.1)    We have completed inclusion of the earlier 
-% extension packages ~linenox0.sty~, ~linenox1.sty~, and 
-% ~lnopatch.sty~. If one of them is loaded, though, 
-% we produce an error message before something weird happens. 
-% We avoid ~\newif~ because the switchings occur so rarely. 
-
-\AtBeginDocument{% 
-  \let\if@LN@obsolete\iffalse 
-  \@ifpackageloaded{linenox0}{\let\if@LN@obsolete\iftrue}\relax 
-  \@ifpackageloaded{linenox1}{\let\if@LN@obsolete\iftrue}\relax 
-  \@ifpackageloaded{lnopatch}{\let\if@LN@obsolete\iftrue}\relax
-  \if@LN@obsolete 
-    \PackageError{lineno}{Obsolete extension package(s)}{% 
-    With lineno.sty version 4.00 or later,\MessageBreak 
-    linenox0/linenox1/lnopatch.sty must no longer be loaded.}% 
-  \fi 
-} 
-
-% 
-%                                                        \modulolinenumbers[1]
-%                                                                   \section{%
-%               The final touch
-%                                                                     \unskip}
-%
-% There is one deadcycle for each line number.
-
-\advance\maxdeadcycles 100
-
-\endinput
-
-% 
-%                                                                   \section{%
-%               The user commands
-%                                                   \unskip}\label{s:UserCmds} 
-% 
-% The user commands to turn on and off line numbering 
-% are 
-%                                                     \begin{description}\item
-% [|\linenumbers]                                                       \ \par
-%     Turn on line numbering in the current mode.
-%
-%                                                                        \item 
-% [|\linenumbers*]                                              \ \par$\qquad$
-%        and reset the line number to 1.
-%                                                      \def\NL{<number>]}\item 
-%%                         %% Boldface italic occurs here, which is evil. (UL) 
-% [|\linenumbers[\NL]                                           \ \par$\qquad$
-%        and start with <number>.  
-%                                                                        \item
-% [|\nolinenumbers]                                                     \ \par
-%     Turn off line numbering.
-%                                                                        \item
-% [|\runninglinenumbers*[\NL]                                           \ \par
-%     Turn on ~running~ line numbers, with the same optional
-%     arguments as ~\linenumbers~.  The numbers are running
-%     through the text over pagebreaks.  When you turn
-%     numbering off and on again, the numbers will continue,
-%     except, of cause, if you ask to reset or preset the
-%     counter.
-%                                                                        \item
-% [|\pagewiselinenumbers]                                               \ \par
-%     Turn on ~pagewise~ line numbers.  The lines on each
-%     page are numbered beginning with one at the first
-%     ~pagewise~ numbered line.
-%                                                                        \item
-% [|\resetlinenumber[\NL]                                               \ \par
-%     Reset ~[~Set~]~ the line number to 1
-%     ~[~<number>~]~.
-%                                                                        \item
-% [|\setrunninglinenumbers]                                             \ \par
-%     Switch to ~running~ line number mode. Do \emph{not}
-%     turn it on or off.
-%                                                                        \item
-% [|\setpagewiselinenumbers]                                            \ \par
-%     Switch to ~pagewise~ line number mode. Do \emph{not}
-%     turn it on or off.
-%                                                                        \item
-% [|\switchlinenumbers*]                                                \ \par
-%     Causes margin switching in pagewise modes. With the
-%     star,  put the line numbers on the inner margin.
-%                                                                        \item
-% [|\leftlinenumbers*]                                                  \ \par
-%                                                                        \item
-% [|\rightlinenumbers*]                                                 \ \par
-%     Set the line numbers in the left/right margin. With the
-%     star this works for both modes of operation, without
-%     the star only for the currently selected mode. 
-%                                                                        \item
-% [|\runningpagewiselinenumbers]                                        \ \par
-%     When using the pagewise line number mode,  do not
-%     subtract the page offset.  This results in running
-%     line numbers again,  but with the possibility to switch
-%     margins.  Be careful when doing line number
-%     referencing,  this mode status must be the same while
-%     setting the paragraph and during references.
-%                                                                        \item
-% [|\realpagewiselinenumbers]                                           \ \par
-%     Reverses the effect of ~\runningpagewiselinenumbers~.
-%                                                                        \item
-% [|\modulolinenumbers[\NL]                                             \ \par
-%     Give a number only to lines which are multiples of
-%     ~[~<number>~]~.  If <number> is not specified, the
-%     current value in the counter ~linenumbermodulo~ is
-%     retained.  <number>=1 turns this off without changing
-%     ~linenumbermodulo~.  The counter is initialized to 5.
-%%
-%%                               %% TODO v4.4+: `counter', he says. Cf._above. 
-%%
-%%                                                                 (New v4.31) 
-%                                                                        \item
-% [|\modulolinenumbers*[\NL]                                            \ \par 
-%     Like ~\modulolinenumbers~, the only difference being 
-%     that the first line number after a ~\linenumbers~ 
-%     (or ~\runninglinenumbers~, ~\pagewiselinenumbers~, 
-%     ~\quotelinenumbers~) is printed regardless of the 
-%     modulo---yet `1' is printed only after (or \dots) 
-%     ~\firstlinenumber{1}~. 
-%     This also applies to the first line of a 
-%     ~{linenumbers}~ or respective environment. 
-%     See subsection_\ref{ss:Mod} for another explanation. 
-%     The behaviour may be unsatisfactory with pagewise 
-%     line-numbering. 
-%%                                                                (/New v4.31) 
-%%                                                                 (New v4.00)
-%                                                                        \item
-% [|\firstlinenumber]                                                   \ \par 
-%     ~\firstlinenumber{~<filino>~}~ brings about that 
-%     (after it) line numbers less than <filino> do 
-%     \emph{not} appear in the margin. Moreover, with 
-%     ~\modulolinenumbers[~<number>~]~, just the line 
-%     numbers which are <filino> plus a multiple of 
-%     <number> are printed.---If you had 
-%     ~\firstlinenumber{~<pos>~}~ with some $\mbox{<pos>}>0$ 
-%     and want to switch to printing multiples of, e.g., 
-%     4, you best do ~\modulolinenumbers[4]~ and 
-%     ~\firstlinenumber{0}~. (See subsection_\ref{ss:Mod} 
-%     for technical details.) 
-%%                                                                (/New v4.00) 
-%                                                                        \item
-% [|\linenumberdisplaymath]                                             \ \par
-%     Number the lines of a display math in a ~{linenomath}~
-%     environment, but do not in a ~{linenomath*}~
-%     environment.  This is used by the package option
-%     ~[mathlines]~. 
-%                                                                        \item
-% [|\nolinenumberdisplaymath]                                           \ \par
-%     Do not Number the lines of a display math in a
-%     ~{linenomath}~ environment, but do in a
-%     ~{linenomath*}~ environment.  This is the default.
-%                                                                        \item
-% [|\linelabel]                                                         \ \par
-%     Set a ~\linelabel{~<foo>~}~ to the line number where
-%     this commands is in.  Refer to it with the \LaTeX\
-%     referencing commands ~\ref{~<foo>~}~ and
-%     ~\pageref{~<foo>~}~.
-%                                                            \end{description}
-% The commands can be used globally, locally within groups
-% or as environments.  It is important to know that they 
-%%
-%%                                                %% TODO: \linelabel? others? 
-%%
-% take action only when the ~\par~ is executed.  The
-%%
-%%                     %% TODO: sure? ~\modulo...~, e.g.? well, in a sense ... 
-%%
-% ~\end{~<mode>~linenumbers}~ commands provide a ~\par~.
-% Examples:
-%                                                                \begin{verse}
-%   ~{\linenumbers~  <text> ~\par}~                                         \\
-%                                                                         \ \\
-%   ~\begin{linenumbers}~                                                   \\
-%       <text>                                                              \\
-%   ~\end{linenumbers}~                                                     \\
-%                                                                         \ \\
-%   <paragraph> ~{\linenumbers\par}~                                        \\
-%                                                                         \ \\
-%   ~\linenumbers~                                                          \\
-%     <text> ~\par~                                                         \\
-%   ~\nolinenumbers~                                                        \\
-%                                                                         \ \\
-%   ~\linenumbers~                                                          \\
-%   <paragraph> ~{\nolinenumbers\par}~                                      \\
-%                                                                  \end{verse}
-% (New v4.00) 
-% However, the examples containing <paragraph> show what you 
-% should \emph{not} do, at least if you use ~\pagebreak~, 
-% ~\nopagebreak~, ~\vspace~, ~\\*~ or 
-% ~\\[~<space>~]~---cf._section_\ref{s:MVadj}. 
-%
-% The same care should be applied to the ``wizard'' devices 
-% ~\ifLineNumbers~ (subsection_\ref{ss:OnOff}) and
-% ~\PostponeVadjust~ (section_\ref{ss:PVadj}). 
-%  (/New v4.00) 
-% 
-% (New v4.11) Oh, and the commands and environments of 
-% section_{s:Xt} are missing. Sorry, I am in a hurry now. 
-% May be next time.%                                             %% TODO v4.4+ 
-% ---And the  environments ~{linenomath}~ and ~{linenomath*}~should 
-% get an own paragraph. In short, each math display, equation, 
-% or ~{eqnarray}~ should be ``wrapped'' in one of ~{linenomath}~ 
-% and ~{linenomath*}~. 
-% 
-%                                                                \subsection{%
-%                 Customization hooks
-%                                                                     \unskip} 
-% 
-% There are several hooks to customize the appearance of the
-% line numbers, and some low level hooks for special
-% effects. 
-%                                                     \begin{description}\item
-% [|\thelinenumber]                                                     \ \par
-%     This macro should give the representation of the line
-%     number in the \LaTeX-counter ~linenumber~.  The
-%     default is provided by \LaTeX:                              \par$\qquad$
-%         ~\arabic{linenumber}~
-%                                                                        \item
-% [|\makeLineNumberLeft]                                                \ \par
-%     This macro is used to attach a line number to the left
-%     of the text page.  This macro should fill an ~\hbox to 0pt~ 
-%     which will be placed at the left margin of the
-%     page, with the reference point aligned to the line to
-%     which it should give a number.  Please use the macro
-%     ~\LineNumber~ to refer to the line number. 
-%
-%     The default definition is                                   \par$\qquad$
-%         ~\hss\linenumberfont\LineNumber\hskip\linenumbersep~
-%                                                                        \item
-% [|\makeLineNumberRight]                                               \ \par
-%     Like ~\makeLineNumberLeft~, but for line numbers on
-%     the right margin.
-%
-%     The default definition is                                   \par$\qquad$
-%        ~\linenumberfont\hskip\linenumbersep\hskip\textwidth~    \par$\qquad$
-%        ~\hbox to\linenumberwidth{\hss\LineNumber}\hss~
-%                                                                        \item
-% [|\linenumberfont]                                                    \ \par
-%     This macro is initialized to                                \par$\qquad$
-%         ~\normalfont\tiny\sffamily~
-%                                                                        \item
-% [|\linenumbersep]                                                     \ \par
-%     This dimension register sets the separation of the
-%     linenumber to the text. Default value is ~10pt~.
-%                                                                        \item
-% [|\linenumberwidth]                                                   \ \par
-%     This dimension register sets the width of the line
-%     number box on the right margin.  The distance of the
-%     right edge of the text to the right edge of the line
-%     number is ~\linenumbersep~ + ~\linenumberwidth~. The
-%     default value is ~10pt~.  
-%                                                                        \item
-% [|\theLineNumber] (for wizards)                                       \ \par
-%     This macro is called for printing a ~\newlabel~ entry
-%     to the aux-file.  Its definition depends on the mode.
-%     For running line numbers it's just ~\thelinenumber~,
-%     while in pagewise mode, the page offset subtraction
-%     is done in here.
-%                                                                        \item
-% [|\makeLineNumber] (for wizards)                                      \ \par
-%     This macro produces the line numbers.  The definition
-%     depends on the mode.  In the running line numbers
-%     mode it just expands ~\makeLineNumberLeft~.
-%                                                                        \item
-% [|\LineNumber] (for wizards)                                          \ \par
-%     This macro is called by ~\makeLineNumber~ to typeset
-%     the line number.  This hook is changed by the modulo
-%     mechanism 
-%%                                                                        %%%.
-%     and by ~\firstlinenumber~. 
-%%                                                                %% New v4.00 
-%                                                            \end{description}
-%% 
-%% TODO: \stepLineNumber---another wizard command!? 
-%% Not sure, may be retreated. 
-%                                                             \end{document}%D
-------------------------------------------------------------------------------
-                                                                       %SSTOPP
-%% TODO v4.4+:  Check for unwanted comment marks in new comments 
-%%             (resulting from manual aligning): search `New v4.2' 
-%%             and/or ` % '! 
-%% TODO v4.4+:  Check for missing comment marks where a paragraph 
-%%             should end/start. Also to prevent empty "code" lines. 
-%%             Especially, new comments at section ends must be 
-%%             followed by comment mark lines. 
-%%             And prevent ~\par~s from blank lines in definitions! 
-%%             See `visual space' above. 
-%%             For proper appearance in lineno.tex, note that a comment 
-%%             in a final code line changes behaviour. 
-%% TODO v4.4+:  Require README for redistribution? 
-%% TODO v4.4+:  Since discussions of code have increased so much, it 
-%%             would be appropriate not to give to this file 
-%%             extension `.sty' (e.g., `dty'!??). ?? Is quickly read though! 
-%%             A .sty extraction may be possible even if the present 
-%%             file is neither a .doc nor a .dtx. (!???) 
-%%             Use awk line below (etc.) for .doc at least; + .ins or so. 
-%%                 ^ must not be caps! To escape awk. 
-%% TODO v4.4+:  Underfull lines!? (due to long code quotations) 
-%% TODO v4.4+:  Sometimes paragraph indents may be appropriate. 
-%% TODO        Swap first line (`\iffalse...') with corresponding below. 
-               Or do *not* swap, maybe nawk is more reliable. 
-%% TODO v4.4+:  Ponder Stephan's mail from 2004/09/02. 
-%% TODO v4.4+: 
-%% use \@ET@makeLineNumber. 
-%% plus almost all `(UL)' 
-%% plus lots of bad boxes messages 
-%% change v4.3 TODOs when postponed 
-%% remove {old} environments. 
-
-------------------------------------------------------------------------------
-
-# awk command lines for v4.00, mixed with former ones: 
-
-echo "Don't bother about unknown 'iffalse'."                  # SHELL1 
-nawk '/A[W]K/' lineno.sty | nawk -f - lineno.sty >lineno.tex; # SHELL1
-latex lineno; latex lineno; latex lineno; latex lineno;       # SHELL1
-
-BEGIN{DOC=-1;                                     # AWK DOC A W K
- BEGINCODE = "\\begin{code}\\begin{verbatim}";    # AWK
- ENDCODE   = "\\end{verbatim}\n\\end{code}";   }  # AWK
- BEGINCODE = "%    \\begin{macrocode}";           #     DOC A W K
- ENDCODE   = "%    \\end{macrocode}";          }  #     DOC A W K
-/^[ \t]*$/ { ECNT++; next; }                      # AWK DOC A W K
-/\\documentclass/{ sub("article","ltxdoc") }      #     DOC A W K
-/%D$/      { sub("^%* *",""); sub("%D$","");      #     DOC A W K
-             print > "lineno.drv"; next        }  #     DOC A W K
-/^%%/      { next; }                              # AWK DOC A W K
-/^%/       { if (!DOC) { print ENDCODE; }         # AWK DOC A W K
-             DOC=1; ECNT=0;                       # AWK DOC A W K
-             sub("^% *","");                      # AWK
-             sub("^% *","% ");                    #     DOC A W K
-             print; next;                      }  # AWK DOC A W K
-/%VERSION/ { sub("%VERSION",""); print; next; }   # AWK 
-/%SSTOPP/  { exit }                               # AWK 
-DOC<0      { next }                               # AWK DOC A W K
-/^-+-$/    { if (!DOC) print ENDCODE; exit }      # AWK DOC A W K
-{ if (DOC) { ECNT=DOC=0; print BEGINCODE; }       # AWK DOC A W K
-  while (ECNT>0) { print " "; ECNT--; }           # AWK DOC A W K
-  print $0;                                    }  # AWK DOC A W K
-
-# New v4.00, UL: know nothing about awk; found present solution 
-# in hours of trial and error. 
-
-% Earlier (should be inhibited by %SSTOPP above and otherwise): 
-echo "expect errors for unknown commands 'iffalse' and 'fi'";# SHELL0 SHELL#1 
-awk '/A[W]K/' lineno.sty | awk -f - lineno.sty >lineno.tex;  # SHELL0
-latex lineno; latex lineno; latex lineno; latex lineno;      # SHELL0
-nawk '/A[W]K/' lineno4.sty | nawk -f - lineno4.sty >lineno4.tex;  # SHELL#1
-latex lineno4; latex lineno4; latex lineno4; latex lineno4;       # SHELL#1
-
-awk '/DOC A [W] K/' lineno.sty | awk -f - lineno.sty >lineno.doc; # DOC SH
-
-BEGIN{DOC=-1;                                     # A#WK DOC A W K
- BEGINCODE = "\\begin{code}\\begin{verbatim}";    # A#WK
- ENDCODE   = "\\end{verbatim}\n\\end{code}";   }  # A#WK
- BEGINCODE = "%    \\begin{macrocode}";           #     DOC A W K
- ENDCODE   = "%    \\end{macrocode}";          }  #     DOC A W K
-/^[ \t]*$/ { ECNT++; next; }                      # A#WK DOC A W K
-/\\documentclass/{ sub("article","ltxdoc") }      #     DOC A W K
-/%D$/      { sub("^%* *",""); sub("%D$","");      #     DOC A W K
-             print > "lineno.drv"; next        }  #     DOC A W K
-/^%%/      { next; }                              # A#WK DOC A W K
-/^%/       { if (!DOC) { print ENDCODE; }         # A#WK DOC A W K
-             DOC=1; ECNT=0;                       # A#WK DOC A W K
-             sub("^% *","");                      # A#WK
-             sub("^% *","% ");                    #     DOC A W K
-             print; next;                      }  # A#WK DOC A W K
-DOC<0      { next }                               # A#WK DOC A W K
-/^-+-$/    { if (!DOC) print ENDCODE; exit }      # A#WK DOC A W K
-{ if (DOC) { ECNT=DOC=0; print BEGINCODE; }       # A#WK DOC A W K
-  while (ECNT>0) { print " "; ECNT--; }           # A#WK DOC A W K
-  print $0;                                    }  # A#WK DOC A W K
-
-
-------------------------------------------------------------------------------
-
-If you are looking here because of the two top lines of the file: 
-
-A .tex documentation of this macro file can be obtained by 
-
-    sh lineno.sty 
-
-under UNIX.--You may find this hint little helpful. One 
-reason may be that the awk versions to which you have access 
-don't work suitably. Another reason may be that you don't have 
-access to UNIX (in some sense). However, a .tex, .dvi, or .pdf 
-version of such a documentation should be available from CTAN, 
-in the same folder as the present file. When we typed this, that 
-folder was /macros/latex/contrib/lineno. If this has changed in 
-the meantime, a CTAN search should lead you to a folder 
-containing such a documentation. Or you may get help from one of 
-the e-mail addresses above. 
-
-




