code: function( context, target ) {
      var method = target ? 'qsa' : 'tag'
      var target = target || 'em'
      var $target = $[ method ]( target, context )
  
      $target
      .forEach(function( elem ) {
        var $elem = Han( elem )
  
        if ( Locale.support.textemphasis ) {
          $elem
          .avoid( 'rt, h-char' )
          .charify({ biaodian: true, punct: true })
        } else {
          $elem
          .avoid( 'rt, h-char, h-char-group' )
          .jinzify()
          .groupify({ western: true })
          .charify({
            hanzi:     true,
            biaodian:  true,
            punct:     true,
            latin:     true,
            ellinika:  true,
            kirillica: true
          })
        }
      })
    }
docs: Traverse all target elements to render emphasis marks.