* doc/c-tree.texi: Use more logical markup.

From-SVN: r43180

gcc/ChangeLog

 2001-06-11  Joseph S. Myers  <jsm28@cam.ac.uk>
 
+	* doc/c-tree.texi: Use more logical markup.
+
+2001-06-11  Joseph S. Myers  <jsm28@cam.ac.uk>
+
 	* c-decl.c (xref_tag): Don't return previous tags of wrong type.
 
 2001-06-11  Aldy Hernandez  <aldyh@redhat.com>

gcc/doc/c-tree.texi

@@ -88,7 +88,7 @@ return trees as output.  However, most macros require a certain kinds of
 tree node as input.  In other words, there is a type-system for trees,
 but it is not reflected in the C type-system.
 
-For safety, it is useful to configure G++ with @code{--enable-checking}.
+For safety, it is useful to configure G++ with @option{--enable-checking}.
 Although this results in a significant performance penalty (since all
 tree types are checked at run-time), and is therefore inappropriate in a
 release version, it is extremely helpful during the development process.
@@ -621,8 +621,8 @@ rather than the global namespace in particular.
 
 The @code{::std} namespace, however, @emph{is} special, unless
 @code{flag_honor_std} is set.  This variable is set by the use
-@samp{-fhonor-std} (or an option that implies it, like
-@samp{-fnew-abi}), when invoking G++.  When @code{flag_honor_std} is
+@option{-fhonor-std} (or an option that implies it, like
+@option{-fnew-abi}), when invoking G++.  When @code{flag_honor_std} is
 set, the @code{std} namespace is just like any other namespace.  When
 @code{flag_honor_std} is not set, however, the @code{::std} namespace is
 treated as a synonym for the global namespace, thereby allowing users to