latex package "program" update (17jul07)

git-svn-id: svn://tug.org/texlive/trunk@4676 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 18 insertions, 8 deletions

diff --git a/Master/texmf-dist/doc/latex/program/program-demo.tex b/Master/texmf-dist/doc/latex/program/program-demo.tex
index eea77bf7fff..af7c3bcbe8a 100644
--- a/Master/texmf-dist/doc/latex/program/program-demo.tex
+++ b/Master/texmf-dist/doc/latex/program/program-demo.tex
@@ -1,4 +1,6 @@
 \documentclass{article}
+\usepackage{amsmath}
+\usepackage{amssymb}
 \usepackage{newlfont}
 \usepackage{program}
 \setlength{\parskip}{1ex}
@@ -16,18 +18,23 @@
 % \end{program}
 % \end{figure}
 
+% To use |foo_bar| in headings, set _ to be active.
+% Not done by default as this clashes with \includegraphics
+% if filenames have _ characters in them:
+
+\catcode`\_\active
 
 \begin{document}
 \title{A demonstration of the {\tt program} environment}
 \author{Martin Ward\\
-Centre for Software Maintenance\\
-University of Durham}
+\tt{martin@gkc.org.uk}}
 \maketitle
 
 \tableofcontents
 
 \section{Example with |first_set| and $|first_set|$.}
 
+
 The {\tt program} style defines two environments, {\tt program} and {\tt
 programbox} for typesetting programs and algorithms. Within the program
 environment:
@@ -47,11 +54,10 @@ underscores (and other unusual characters).
 \verb:testing | in verbatim:
 
 \begin{verbatim}
-testing | in verbatim
+testing | and @ in verbatim
 \end{verbatim}
 
 
-
 Here is a small program: 
 \( |first_set|:= \set{x | x^2 + y_1 > 0 } \)
 It shows how to typeset mathematics as part of a program. Since each line is
@@ -160,7 +166,7 @@ the algorithms within the sections.
 \WHERE
 \FUNCT |expt|(x,n) \BODY
 	  \EXP z:=1;
-	       \WHILE n \ne 0 \DO 
+	       \WHILE n \neq 0 \DO 
 		  \WHILE |even|(n) \DO
 		     n:=n/2; x:=x*x \OD; \label{foo}
 		  n:=n-1; z:=z*x \OD;
@@ -271,9 +277,9 @@ And here's the transformed and corrected version:
 \end{program}
 \end{algorithm}
 
-These are the same programs in a sans-serif style, using the command
-\verb:\sfvariables::
-\sfvariables
+Below are the same programs in a bold serif style with underlined keywords, using the command
+\verb:\bfvariables::
+\bfvariables
 \begin{program}
  \VAR \seq{m := 0, p := 0, |last| := `` ''}; 
  \ACTIONS |prog|: 
@@ -311,5 +317,9 @@ l \ACTIONEQ %
   |write|(|line|) \OD 
 \end{program}
 
+In my opinion, the \verb:\sfvariables: style looks much better.
+The \verb:\bfvariables: style was the default, but this was changed with version 3.3.11.
+
+
 \end{document}