[expr] Add page breaks.

Partially addresses #4228.

Author: Dawn Perchik

source/expressions.tex

@@ -582,6 +582,8 @@
 descriptions of those operators and contexts.
 \end{note}
 
+\newpage
+
 \rSec2[conv.lval]{Lvalue-to-rvalue conversion}
 
 \pnum
@@ -1389,6 +1391,9 @@
 template parameter object
 and a prvalue otherwise\iref{basic.lval};
 it is a bit-field if the identifier designates a bit-field.
+
+\newpage
+
 \begin{example}
 \begin{codeblock}
 void f() {
@@ -2469,6 +2474,7 @@
 
 template<typename ...Args>
 bool f(Args ...args) {
+@\newpage@
   return (args + ... + args);   // error: both operands contain unexpanded packs
 }
 \end{codeblock}
@@ -2796,6 +2802,7 @@
 \begin{example}
 \begin{codeblock}
 template<typename T> concept C = requires (T a) {
+@\newpage@
   requires sizeof(a) == 4;      // OK
   requires a == 0;              // error: evaluation of a constraint variable
 };
@@ -4596,6 +4603,7 @@
 \begin{codeblock}
 template<class... Types>
 struct count {
+@\newpage@
   static const std::size_t value = sizeof...(Types);
 };
 \end{codeblock}
@@ -5723,6 +5731,8 @@
 \tcode{(a/b)*b + a\%b} is equal to \tcode{a}; otherwise, the behavior
 of both \tcode{a/b} and \tcode{a\%b} is undefined.
 
+\newpage
+
 \rSec2[expr.add]{Additive operators}%
 \indextext{expression!additive operators}%
 \indextext{operator!additive}
@@ -6614,6 +6624,9 @@
 The exception is reactivated with the existing exception object;
 no new exception object is created.
 The exception is no longer considered to be caught.
+
+\newpage
+
 \begin{example}
 An exception handler that cannot completely handle the exception itself
 can be written like this: