Use angle brackets for '<describing text>' in listings

This fixes at least the cases using \textless{}, but there could be more cases that didn't escape into text mode that have been missed.

chapters/classes.tex

@@ -1562,7 +1562,7 @@ \subsubsection{Attributes of Enumeration Types}\label{attributes-of-enumeration-
 
 \subsubsection{Type Conversion of Enumeration Values to String or Integer}\label{type-conversion-of-enumeration-values-to-string-or-integer}
 
-The type conversion function \lstinline!Integer($\mbox{\emph{\textless{}expression of enumeration type\textgreater{}}}$)! returns the ordinal number of the enumeration value \lstinline!E.enumvalue!, to which the expression is evaluated, where $\text{\lstinline!Integer(E.e1)!} = 1$, $\text{\lstinline!Integer(E.en)!} = n$, for an enumeration type \lstinline!E = enumeration(e1, $\ldots$, en)!.
+The type conversion function \lstinline!Integer($\langle\mbox{\emph{expression of enumeration type}}\rangle$)! returns the ordinal number of the enumeration value \lstinline!E.enumvalue!, to which the expression is evaluated, where $\text{\lstinline!Integer(E.e1)!} = 1$, $\text{\lstinline!Integer(E.en)!} = n$, for an enumeration type \lstinline!E = enumeration(e1, $\ldots$, en)!.
 
 \lstinline!String(E.enumvalue)! gives the \lstinline!String! representation of the enumeration value.
 
@@ -1579,10 +1579,7 @@ \subsubsection{Type Conversion of Integer to Enumeration Values}\label{type-conv
 implicitly defined. This function can be used in an expression to
 convert an integer value to the corresponding (as described in \cref{type-conversion-of-enumeration-values-to-string-or-integer}) enumeration value.
 
-For an enumeration type named \lstinline!EnumTypeName!, the expression
-\lstinline!EnumTypeName(<Integer expression>)! returns the
-enumeration value \lstinline!EnumTypeName.e! such that \lstinline!Integer(EnumTypeName.e)! is
-equal to the original integer expression.
+For an enumeration type named \lstinline!EnumTypeName!, the expression \lstinline!EnumTypeName($\langle\mbox{\emph{Integer expression}}\rangle$)! returns the enumeration value \lstinline!EnumTypeName.e! such that \lstinline!Integer(EnumTypeName.e)! is equal to the original integer expression.
 
 Attempting to convert an integer argument that does not correspond to a
 value of the enumeration type is an error.

chapters/connectors.tex

@@ -875,7 +875,8 @@ \subsection{Overconstrained Equation Operators for Connection Graphs}\label{over
 This function can be used at all places where a \lstinline!connect! statement is allowed.
 
 \begin{nonnormative}
-E.g., it is not allowed to use this function in a when-clause.  This definition shall be used if in a model with connectors \lstinline!A! and \lstinline!B! the overdetermined records \lstinline!A.R! and \lstinline!B.R! are algebraically coupled in the model, e.g., due to \lstinline!B.R = f(A.R!, \textless{}other unknowns\textgreater{}).
+E.g., it is not allowed to use this function in a when-clause.
+This definition shall be used if in a model with connectors \lstinline!A! and \lstinline!B! the overdetermined records \lstinline!A.R! and \lstinline!B.R! are algebraically coupled in the model, e.g., due to \lstinline!B.R = f(A.R, $\langle\mbox{\emph{other unknowns}}\rangle$)!.
 \end{nonnormative}
 \end{semantics}
 \end{operatordefinition}

chapters/functions.tex

@@ -12,7 +12,7 @@ \section{Function Declaration}\label{function-declaration}
 \begin{nonnormative}
 The structure of a typical function declaration is sketched by
 the following schematic function example:
-\begin{lstlisting}[language=modelica,escapechar=!]
+\begin{lstlisting}[language=modelica]
 function $\mathit{functionname}$
   input  TypeI1 in1;
   input  TypeI2 in2;
@@ -22,10 +22,10 @@ \section{Function Declaration}\label{function-declaration}
   output TypeO2 out2 = $\mathit{defaultExpr}_{2}$;
   $\ldots$
 protected
-  !\emph{\textless{}local variables\textgreater{}}!
+  $\langle\mbox{\emph{local variables}}\rangle$
   $\ldots$
 algorithm
-  !\emph{\textless{}statements\textgreater{}}!
+  $\langle\mbox{\emph{statements}}\rangle$
   $\ldots$
 end $\mathit{functionname}$;
 \end{lstlisting}

chapters/lexicalstructure.tex

@@ -21,13 +21,9 @@ \section{Character Set}\label{character-set}
 
 \section{Comments}\label{comments}
 
-There are two kinds of comments in Modelica which are not lexical units
-in the language and therefore are treated as white-space by a Modelica
-translator. The white-space characters are space, tabulator, and line
-separators (carriage return and line feed); and white-space cannot occur
-inside tokens, e.g., \textless{}= must be written as two characters
-without space or comments between them.  The following comment variants are
-available:
+There are two kinds of comments in Modelica which are not lexical units in the language and therefore are treated as white-space by a Modelica translator.
+The white-space characters are space, tabulator, and line separators (carriage return and line feed); and white-space cannot occur inside tokens, e.g., \lstinline!<=! must be written as two characters without space or comments between them.
+The following comment variants are available:
 %TODO-FORMAT should be a table instead of lstlisting?
 \begin{lstlisting}[language=modelica]
 // comment & Characters from // to the end of the line are ignored.

chapters/revisions.tex

@@ -1444,8 +1444,7 @@ \subsection{Main changes in Modelica 3.2 Revision 1}\label{main-changes-in-model
   Improved the definition of \lstinline!reinit!.
 \item
   \cref{discrete-time-expressions} Discrete-Time Expressions\\
-  Improved definition of ordered relations
-  (\textgreater{},\textless{},\textgreater{}=,\textless{}=).
+  Improved definition of ordered relations (\lstinline!>!, \lstinline!<!, \lstinline!>=!, \lstinline!<=!).
 \item
   \cref{conditional-component-declaration} Conditional Component Declaration\\
   Clarified redeclaration of a component.

chapters/statements.tex

@@ -139,12 +139,9 @@ \subsection{Simple Assignment Statements}\label{simple-assignment-statements}
 
 \subsubsection{Assignments from Called Functions with Multiple Results}\label{assignments-from-called-functions-with-multiple-results}
 
-There is a special form of assignment statement that is used only when
-the right-hand side contains a call to a function with multiple results.
-The left-hand side contains a parenthesized, comma-separated list of
-variables receiving the results from the function call. A function with
-\emph{n} results needs \emph{m\textless{}=n} receiving variables on the
-left-hand side, and the variables are assigned from left to right.
+There is a special form of assignment statement that is used only when the right-hand side contains a call to a function with multiple results.
+The left-hand side contains a parenthesized, comma-separated list of variables receiving the results from the function call.
+A function with $n$ results needs $m \leq n$ receiving variables on the left-hand side, and the variables are assigned from left to right.
 
 \begin{lstlisting}[language=modelica]
 (out1, out2, out3) := function_name(in1, in2, in3, in4);

chapters/synchronous.tex

@@ -812,9 +812,9 @@ \subsection{Sub-clock conversion operators}\label{sub-clock-conversion-operators
 \section{Clocked When-Clause}\label{clocked-when-clause}
 
 In addition to the previously discussed conditional when-clause, a \emph{clocked} when-clause\index{clocked!when-clause}\index{when-clause!clocked} is introduced:
-\begin{lstlisting}[language=modelica,escapechar=!]
+\begin{lstlisting}[language=modelica]
 when $\mathit{clockExpression}$ then
-  !\emph{\textless{}clocked equations\textgreater{}}!
+  $\langle\mbox{\emph{clocked equations}}\rangle$
   $\ldots$
 end when;
 \end{lstlisting}

chapters/syntax.tex

@@ -60,9 +60,8 @@ \section{Lexical conventions}\label{lexical-conventions}
   other strings have to contain only the sub-set of Unicode characters
   identical with the 7-bit US-ASCII character set.
   \begin{nonnormative}
-  As a consequence, operators like `\textgreater{}' or `\textless{}', and external functions only operate on ASCII strings and not on Unicode-strings.
-  Within a description-string the tags \lstinline!<HTML>! and \lstinline!</HTML>! or \lstinline!<html>! and \lstinline!</html>! define optionally begin
-  and end of content that is HTML encoded.
+  As a consequence, operators like `\lstinline!>!' or `\lstinline!<!', and external functions only operate on ASCII strings and not on Unicode-strings.
+  Within a description-string the tags \lstinline!<HTML>! and \lstinline!</HTML>! or \lstinline!<html>! and \lstinline!</html>! define optionally begin and end of content that is HTML encoded.
   \end{nonnormative}
 \item
   Boldface denotes keywords of the Modelica language. Keywords are