code: function postProcess(state) {
      var i,
          foundStart = false,
          foundEnd = false,
          delim,
          token,
          delimiters = state.delimiters,
          max = state.delimiters.length;
  
      for (i = 0; i < max; i++) {
        delim = delimiters[i];
        if (delim.marker === '->') {
          foundStart = true;
        } else if (delim.marker === '<-') {
          foundEnd = true;
        }
      }
      if (foundStart && foundEnd) {
        for (i = 0; i < max; i++) {
          delim = delimiters[i];
  
          if (delim.marker === '->') {
            foundStart = true;
            token         = state.tokens[delim.token];
            token.type    = 'centertext_open';
            token.tag     = 'div';
            token.nesting = 1;
            token.markup  = '->';
            token.content = '';
            token.attrs = [ [ 'class', 'text-align-center' ] ];
          } else if (delim.marker === '<-') {
            if (foundStart) {
              token         = state.tokens[delim.token];
              token.type    = 'centertext_close';
              token.tag     = 'div';
              token.nesting = -1;
              token.markup  = '<-';
              token.content = '';
            }
          }
        }
      }
    }
docs: Walk through delimiter list and replace text tokens with tags