@deftypefn Supplemental char* strrchr (const char *@var{s}, int @var{c})
Returns a pointer to the last occurrence of the character @var{c} in
-the string @var{s}, or NULL if not found. If @var{c} is itself the
+the string @var{s}, or @code{NULL} if not found. If @var{c} is itself the
null character, the results are undefined.
@end deftypefn