code: function( commandName, data ) {
  			var command = this.getCommand( commandName );
  
  			var eventData = {
  				name: commandName,
  				commandData: data,
  				command: command
  			};
  
  			if ( command && command.state != CKEDITOR.TRISTATE_DISABLED ) {
  				if ( this.fire( 'beforeCommandExec', eventData ) !== false ) {
  					eventData.returnValue = command.exec( eventData.commandData );
  
  					// Fire the 'afterCommandExec' immediately if command is synchronous.
  					if ( !command.async && this.fire( 'afterCommandExec', eventData ) !== false )
  						return eventData.returnValue;
  				}
  			}
  
  			// throw 'Unknown command name "' + commandName + '"';
  			return false;
  		}
docs: Executes a command associated with the editor.
  
  editorInstance.execCommand( 'bold' );
  
  @param {String} commandName The indentifier name of the command.
  @param {Object} [data] Data to be passed to the command.
  @returns {Boolean} `true` if the command was executed
  successfully, otherwise `false`.
  @see CKEDITOR.editor#addCommand