diff --git a/core/modules/widgets/action-listops.js b/core/modules/widgets/action-listops.js
index de866619f..a6b0d4f62 100644
--- a/core/modules/widgets/action-listops.js
+++ b/core/modules/widgets/action-listops.js
@@ -6,86 +6,87 @@ module-type: widget
 Action widget to apply list operations to any tiddler field (defaults to the 'list' field of the current tiddler)
 
 \*/
-(function () {
+(function() {
 
-	/*jslint node: true, browser: true */
-	/*global $tw: false */
-	"use strict";
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+var Widget = require("$:/core/modules/widgets/widget.js").widget;
+var ActionListopsWidget = function(parseTreeNode, options) {
+	this.initialise(parseTreeNode, options);
+};
+/**
+ * Inherit from the base widget class
+ */
+ActionListopsWidget.prototype = new Widget();
+/**
+ * Render this widget into the DOM
+ */
+ActionListopsWidget.prototype.render = function(parent, nextSibling) {
+	this.computeAttributes();
+	this.execute();
+};
+/**
+ * Compute the internal state of the widget
+ */
+ActionListopsWidget.prototype.execute = function() {
+	// Get our parameters
+	this.target = this.getAttribute("$tiddler", this.getVariable(
+		"currentTiddler"));
+	this.filter = this.getAttribute("$filter");
+	this.subfilter = this.getAttribute("$subfilter");
+	this.listField = this.getAttribute("$field", "list");
+	this.listIndex = this.getAttribute("$index");
+	this.filtertags = this.getAttribute("$tags");
+};
+/**
+ * 	Refresh the widget by ensuring our attributes are up to date
+ */
+ActionListopsWidget.prototype.refresh = function(changedTiddlers) {
+	var changedAttributes = this.computeAttributes();
+	if(changedAttributes.$tiddler || changedAttributes.$filter ||
+		changedAttributes.$subfilter || changedAttributes.$field ||
+		changedAttributes.$index || changedAttributes.$tags) {
+		this.refreshSelf();
+		return true;
+	}
+	return this.refreshChildren(changedTiddlers);
+};
+/**
+ * 	Invoke the action associated with this widget
+ */
+ActionListopsWidget.prototype.invokeAction = function(triggeringWidget,
+	event) {
+	//Apply the specified filters to the lists
+	var field = this.listField,
+		index,
+		type = "!!",
+		list = this.listField;
+	if(this.listIndex) {
+		field = undefined;
+		index = this.listIndex;
+		type = "##";
+		list = this.listIndex;
+	}
+	if(this.filter) {
+		this.wiki.setText(this.target, field, index, $tw.utils.stringifyList(
+			this.wiki
+			.filterTiddlers(this.filter, this)));
+	}
+	if(this.subfilter) {
+		var subfilter = "[list[" + this.target + type + list + "]] " + this.subfilter;
+		this.wiki.setText(this.target, field, index, $tw.utils.stringifyList(
+			this.wiki
+			.filterTiddlers(subfilter, this)));
+	}
+	if(this.filtertags) {
+		var tagfilter = "[list[" + this.target + "!!tags]] " + this.filtertags;
+		this.wiki.setText(this.target, "tags", undefined, $tw.utils.stringifyList(
+			this.wiki.filterTiddlers(tagfilter, this)));
+	}
+	return true; // Action was invoked
+};
 
-	var Widget = require("$:/core/modules/widgets/widget.js")
-		.widget;
-
-	var ActionListopsWidget = function (parseTreeNode, options) {
-		this.initialise(parseTreeNode, options);
-	};
-
-	/*
-	Inherit from the base widget class
-	*/
-	ActionListopsWidget.prototype = new Widget();
-
-	/*
-	Render this widget into the DOM
-	*/
-	ActionListopsWidget.prototype.render = function (parent, nextSibling) {
-		this.computeAttributes();
-		this.execute();
-	};
-
-	/*
-	Compute the internal state of the widget
-	*/
-	ActionListopsWidget.prototype.execute = function () {
-		// Get our parameters
-		this.target = this.getAttribute("$tiddler", this.getVariable("currentTiddler"));
-		this.filter = this.getAttribute("$filter");
-		this.subfilter = this.getAttribute("$subfilter");
-		this.listField = this.getAttribute("$field", "list");
-		this.listIndex = this.getAttribute("$index");
-		this.filtertags = this.getAttribute("$tags");
-	};
-
-	/*
-	Refresh the widget by ensuring our attributes are up to date
-	*/
-	ActionListopsWidget.prototype.refresh = function (changedTiddlers) {
-		var changedAttributes = this.computeAttributes();
-		if (changedAttributes.$tiddler || changedAttributes.$filter || changedAttributes.$subfilter || changedAttributes.$list || changedAttributes.$index || changedAttributes.$tags) {
-			this.refreshSelf();
-			return true;
-		}
-		return this.refreshChildren(changedTiddlers);
-	};
-
-	/*
-	Invoke the action associated with this widget
-	*/
-	ActionListopsWidget.prototype.invokeAction = function (triggeringWidget, event) {
-		//Apply the specified filters to the lists
-		var field = this.listField,
-			index = undefined,
-			type = "!!",
-			list = this.listField;
-		if (this.listIndex) {
-			field = undefined;
-			index = this.listIndex;
-			type = "##";
-			list = this.listIndex;
-		}
-		if (this.filter) {
-			this.wiki.setText(this.target, field, index, $tw.utils.stringifyList(this.wiki.filterTiddlers(this.filter, this)));
-		}
-		if (this.subfilter) {
-			var subfilter = "[list[" + this.target + type + list + "]] " + this.subfilter;
-			this.wiki.setText(this.target, field, index, $tw.utils.stringifyList(this.wiki.filterTiddlers(subfilter, this)));
-		}
-		if (this.filtertags) {
-			var tagfilter = "[list[" + this.target + "!!tags]] " + this.filtertags;
-			this.wiki.setText(this.target, "tags", undefined, $tw.utils.stringifyList(this.wiki.filterTiddlers(tagfilter, this)));
-		}
-		return true; // Action was invoked
-	};
-
-	exports["action-listops"] = ActionListopsWidget;
+exports["action-listops"] = ActionListopsWidget;
 
 })();