bundles/org.eclipse.orion.client.editor/web/orion/editor/editor.js
function(visible, force) {
			if (this._annotationRulerVisible === visible && !force) { return; }
			this._annotationRulerVisible = visible;
			if (!this._annotationRuler) { return; }
			var textView = this._textView;
			if (visible) {
				textView.addRuler(this._annotationRuler, 0);
			} else {
				textView.removeRuler(this._annotationRuler);
			}
		}
function(visible, force) {
			if (this._annotationRulerVisible === visible && !force) { return; }
			this._annotationRulerVisible = visible;
			if (!this._annotationRuler) { return; }
			var textView = this._textView;
			if (visible) {
				textView.addRuler(this._annotationRuler, 0);
			} else {
				textView.removeRuler(this._annotationRuler);
			}
		}
function ( visible , force ) { if ( this . _annotationRulerVisible === visible && ! force ) { return ; } this . _annotationRulerVisible = visible ; if ( ! this . _annotationRuler ) { return ; } var textView = this . _textView ; if ( visible ) { textView . addRuler ( this . _annotationRuler , 0 ) ; } else { textView . removeRuler ( this . _annotationRuler ) ; } }
Sets whether the annotation ruler is visible.

@param {Boolean} visible <code>true</code> to show ruler, <code>false</code> otherwise
Sets whether the annotation ruler is visible .