Directory [tphols-2011] is added to host the commented version of [Myhill.thy]. Directory [pres] is created to host a build session for logical image [ListP] which is essentially [Main] extended with [List_prefix.thy].

(*show_question_marks := false;*)

no_document use_thy "LaTeXsugar";
quick_and_dirty := true;
use_thy "Slides"