Missing C<...> on code.

Author: Mark Hindess

outline.pod

@@ -104,7 +104,7 @@ numification/stringification, magical auto-increment.
 L<arrays> *
 
 Make it clear that arrays and lists are very different things.  Discuss
-distinction between indexes and length?  Avoid $# altogether?  (Don't have to
+distinction between indexes and length?  Avoid C<$#> altogether?  (Don't have to
 be comprehensive, just clear.)
 
 C<$var1, $var2, $var3> -- why arrays are useful
@@ -393,7 +393,7 @@ Features that don't work quite right but you can't quite avoid.
 
 =head3 Reference Syntax
 
-Don't double $$, collapse multiple arrows, use braces copiously.
+Don't double C<$$>, collapse multiple arrows, use braces copiously.
 
 =head3 Barewords
 

sections/idioms.pod

@@ -12,7 +12,7 @@ them--and they're not quite large enough that you can encapsulate them away
 behind functions and methods.  Instead, they're mannerisms.  They're ways of
 writing Perl with a Perlish accent.
 
-=head2 The Object as $self
+=head2 The Object as C<$self>
 
 X<$self>
 X<variables; $self>