diff -r 499637e8f2c6 -r 0376cccd9118 doc-src/TutorialI/Ifexpr/document/Ifexpr.tex
--- a/doc-src/TutorialI/Ifexpr/document/Ifexpr.tex	Wed Oct 11 09:09:06 2000 +0200
+++ b/doc-src/TutorialI/Ifexpr/document/Ifexpr.tex	Wed Oct 11 10:44:42 2000 +0200
@@ -26,7 +26,7 @@
 \isa{Const\ False}. Variables are represented by terms of the form
 \isa{Var\ n}, where \isa{n} is a natural number (type \isa{nat}).
 For example, the formula $P@0 \land \neg P@1$ is represented by the term
-\isa{And\ {\isacharparenleft}Var\ \isadigit{0}{\isacharparenright}\ {\isacharparenleft}Neg\ {\isacharparenleft}Var\ \isadigit{1}{\isacharparenright}{\isacharparenright}}.
+\isa{And\ {\isacharparenleft}Var\ {\isadigit{0}}{\isacharparenright}\ {\isacharparenleft}Neg\ {\isacharparenleft}Var\ {\isadigit{1}}{\isacharparenright}{\isacharparenright}}.
 
 \subsubsection{What is the value of a boolean expression?}
 
@@ -68,18 +68,18 @@
 formulae, whereas \isa{ifex} is designed for efficiency. It is easy to
 translate from \isa{boolex} into \isa{ifex}:%
 \end{isamarkuptext}%
-\isacommand{consts}\ bool\isadigit{2}if\ {\isacharcolon}{\isacharcolon}\ {\isachardoublequote}boolex\ {\isasymRightarrow}\ ifex{\isachardoublequote}\isanewline
+\isacommand{consts}\ bool{\isadigit{2}}if\ {\isacharcolon}{\isacharcolon}\ {\isachardoublequote}boolex\ {\isasymRightarrow}\ ifex{\isachardoublequote}\isanewline
 \isacommand{primrec}\isanewline
-{\isachardoublequote}bool\isadigit{2}if\ {\isacharparenleft}Const\ b{\isacharparenright}\ {\isacharequal}\ CIF\ b{\isachardoublequote}\isanewline
-{\isachardoublequote}bool\isadigit{2}if\ {\isacharparenleft}Var\ x{\isacharparenright}\ \ \ {\isacharequal}\ VIF\ x{\isachardoublequote}\isanewline
-{\isachardoublequote}bool\isadigit{2}if\ {\isacharparenleft}Neg\ b{\isacharparenright}\ \ \ {\isacharequal}\ IF\ {\isacharparenleft}bool\isadigit{2}if\ b{\isacharparenright}\ {\isacharparenleft}CIF\ False{\isacharparenright}\ {\isacharparenleft}CIF\ True{\isacharparenright}{\isachardoublequote}\isanewline
-{\isachardoublequote}bool\isadigit{2}if\ {\isacharparenleft}And\ b\ c{\isacharparenright}\ {\isacharequal}\ IF\ {\isacharparenleft}bool\isadigit{2}if\ b{\isacharparenright}\ {\isacharparenleft}bool\isadigit{2}if\ c{\isacharparenright}\ {\isacharparenleft}CIF\ False{\isacharparenright}{\isachardoublequote}%
+{\isachardoublequote}bool{\isadigit{2}}if\ {\isacharparenleft}Const\ b{\isacharparenright}\ {\isacharequal}\ CIF\ b{\isachardoublequote}\isanewline
+{\isachardoublequote}bool{\isadigit{2}}if\ {\isacharparenleft}Var\ x{\isacharparenright}\ \ \ {\isacharequal}\ VIF\ x{\isachardoublequote}\isanewline
+{\isachardoublequote}bool{\isadigit{2}}if\ {\isacharparenleft}Neg\ b{\isacharparenright}\ \ \ {\isacharequal}\ IF\ {\isacharparenleft}bool{\isadigit{2}}if\ b{\isacharparenright}\ {\isacharparenleft}CIF\ False{\isacharparenright}\ {\isacharparenleft}CIF\ True{\isacharparenright}{\isachardoublequote}\isanewline
+{\isachardoublequote}bool{\isadigit{2}}if\ {\isacharparenleft}And\ b\ c{\isacharparenright}\ {\isacharequal}\ IF\ {\isacharparenleft}bool{\isadigit{2}}if\ b{\isacharparenright}\ {\isacharparenleft}bool{\isadigit{2}}if\ c{\isacharparenright}\ {\isacharparenleft}CIF\ False{\isacharparenright}{\isachardoublequote}%
 \begin{isamarkuptext}%
 \noindent
-At last, we have something we can verify: that \isa{bool\isadigit{2}if} preserves the
+At last, we have something we can verify: that \isa{bool{\isadigit{2}}if} preserves the
 value of its argument:%
 \end{isamarkuptext}%
-\isacommand{lemma}\ {\isachardoublequote}valif\ {\isacharparenleft}bool\isadigit{2}if\ b{\isacharparenright}\ env\ {\isacharequal}\ value\ b\ env{\isachardoublequote}%
+\isacommand{lemma}\ {\isachardoublequote}valif\ {\isacharparenleft}bool{\isadigit{2}}if\ b{\isacharparenright}\ env\ {\isacharequal}\ value\ b\ env{\isachardoublequote}%
 \begin{isamarkuptxt}%
 \noindent
 The proof is canonical:%