package Plugins::MyPlugin;
      return bless({

            template_command_handlers => {
                  MY_TAG  => \&tagHandler,
            },
      });

      sub tagHandler
      { 
           my ($self, $main, $params, $output) = @_; 
           my ($tag, $name) = @$params;
            $$output .= "$name was here";
      }