code: function (text) {
  			if (typeof text === 'undefined') {
  				// Unescape characters
  				if (node.C) {
  					return node.C.replace(/\\([\\:\]])/g, '$1');
  				} else {
  					return '';
  				}
  			} else {
  				// Escape characters
  				node.C = text.replace(/[\\:\]]/g, '\\$&');
  			}
  		}
docs: Get or set a comment on the current node @see http://www.red-bean.com/sgf/sgf4.html#text