[ifndr] Use codeblocktu

Author: jensmaurer

source/ifndr.tex

@@ -180,19 +180,18 @@
 
 \pnum
 \ifndrxref{dcl.align.diff.translation.units} \\
-No diagnostic is required if declarations of an entity have different alignment-specifiers in different
+No diagnostic is required if declarations of an entity have different \grammarterm{alignment-specifier}s in different
 translation units.
 
 \pnum
 \begin{example}
-\begin{codeblock}
-// Translation unit \#1:
+\begin{codeblocktu}{Translation unit \#1}
 struct S { int x; } s, *p = &s;
-
-// Translation unit \#2:
+\end{codeblocktu}
+\begin{codeblocktu}{Translation unit \#2}
 struct alignas(16) S;   // ill-formed, no diagnostic required, definition of \tcode{S} lacks alignment
 extern S* p;
-\end{codeblock}
+\end{codeblocktu}
 \end{example}
 
 \rSec2[ifndr.dcl.attr.noreturn]{Noreturn attribute}
@@ -202,14 +201,12 @@
 
 \pnum
 \begin{example}
-\begin{codeblock}
-/* Translation Unit A */
-[[noreturn]] void f() {
-}
-
-/* Translation Unit B */
-struct void f(int i);   // ill-formed no diagnostic required, declared without noreturn
-\end{codeblock}
+\begin{codeblocktu}{Translation unit \#1}
+[[noreturn]] void f() {}
+\end{codeblocktu}
+\begin{codeblocktu}{Translation unit \#2}
+void f(int i);          // ill-formed no diagnostic required, declared without \tcode{noreturn}
+\end{codeblocktu}
 \end{example}
 
 \rSec1[ifndr.module]{\ref{module}: Modules}
@@ -218,9 +215,9 @@
 
 \pnum
 \ifndrxref{module.unit.reserved.identifiers} \\
-All module-names either beginning with an identifier consisting of
-std followed by zero or more digits or containing a reserved identifier (5.10) are reserved and shall not be
-specified in a module-declaration; no diagnostic is required.
+All \grammarterm{module-name}s either beginning with an identifier consisting of
+std followed by zero or more digits or containing a reserved identifier\iref{lex.token} are reserved and shall not be
+specified in a \grammarterm{module-declaration}; no diagnostic is required.
 
 \pnum
 \begin{example}