--- a/CookBook/Intro.thy	Wed Sep 17 19:20:37 2008 -0400
+++ b/CookBook/Intro.thy	Tue Sep 30 03:30:40 2008 -0400
@@ -7,7 +7,7 @@
 
 text {*
   The purpose of this cookbook is to guide the reader through the
-  first steps in Isabelle programming, and to provide recipes for
+  first steps of Isabelle programming, and to provide recipes for
   solving common problems. 
 *}
 
@@ -17,7 +17,7 @@
   This cookbook targets an audience who already knows how to use Isabelle
   for writing theories and proofs. We also assume that readers are 
   familiar with the Standard ML, the programming language in which  
-  most of Isabelle is implemented. If you are unfamiliar with any of
+  most of Isabelle is implemented. If you are unfamiliar with either of
   these two subjects, you should first work through the Isabelle/HOL
   tutorial \cite{isa-tutorial} and Paulson's book on Standard ML
   \cite{paulson-ml2}.