code: function( isReadOnly )
  		{
  			isReadOnly = ( isReadOnly == undefined ) || isReadOnly;
  
  			if ( this.readOnly != isReadOnly )
  			{
  				this.readOnly = isReadOnly;
  
  				// Fire the readOnly event so the editor features can update
  				// their state accordingly.
  				this.fire( 'readOnly' );
  			}
  		}
docs: Puts or restores the editor into read-only state. When in read-only,
  the user is not able to change the editor contents, but can still use
  some editor features. This function sets the <code>{@link CKEDITOR.config.readOnly}</code>
  property of the editor, firing the <code>{@link CKEDITOR.editor#readOnly}</code> event.<br><br>
  <strong>Note:</strong> the current editing area will be reloaded.
  @param {Boolean} [isReadOnly] Indicates that the editor must go
  read-only (<code>true</code>, default) or be restored and made editable
  (<code>false</code>).
  @since 3.6