my @tags= qw/name gender address/;

foreach my $t (@tags)
 {
  eval "sub $t { \$state{'$name'} = 1; }";
  eval "sub ${t}_ { \$state{'$name'} = 1; }";
 }

##</code><code>##

BEGIN
 {
  unless(-e "Tags.pm")
  {
    my @tags= qw/name gender address/;

    open( F, ">Tags.pm" )
              or die "Unable to create Tags.pm:$!";

    foreach my $t (@tags)
     {
      print F "sub $t { \$state{'$name'} = 1; }\n";
      print F "sub ${t}_ { \$state{'$name'} = 1; }\n";
     }
    print F "1;\n";
    close( F ) or die "Unable to close Tags.pm:$!";
   }
 }

use Tags;