diff --git a/core/modules/widgets/action-setfield.js b/core/modules/widgets/action-setfield.js
new file mode 100644
index 000000000..7a8087d5e
--- /dev/null
+++ b/core/modules/widgets/action-setfield.js
@@ -0,0 +1,80 @@
+/*\
+title: $:/core/modules/widgets/action-setfield.js
+type: application/javascript
+module-type: widget
+
+Action widget to set a single field or index on a tiddler.
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var Widget = require("$:/core/modules/widgets/widget.js").widget;
+
+var SetFieldWidget = function(parseTreeNode,options) {
+	this.initialise(parseTreeNode,options);
+};
+
+/*
+Inherit from the base widget class
+*/
+SetFieldWidget.prototype = new Widget();
+
+/*
+Render this widget into the DOM
+*/
+SetFieldWidget.prototype.render = function(parent,nextSibling) {
+	this.computeAttributes();
+	this.execute();
+};
+
+/*
+Compute the internal state of the widget
+*/
+SetFieldWidget.prototype.execute = function() {
+	this.actionTiddler = this.getAttribute("$tiddler",this.getVariable("currentTiddler"));
+	this.actionField = this.getAttribute("$field");
+	this.actionIndex = this.getAttribute("$index");
+	this.actionValue = this.getAttribute("$value");
+};
+
+/*
+Refresh the widget by ensuring our attributes are up to date
+*/
+SetFieldWidget.prototype.refresh = function(changedTiddlers) {
+	var changedAttributes = this.computeAttributes();
+	if(changedAttributes["$tiddler"] || changedAttributes["$field"] || changedAttributes["$index"] || changedAttributes["$value"]) {
+		this.refreshSelf();
+		return true;
+	}
+	return this.refreshChildren(changedTiddlers);
+};
+
+/*
+Invoke the action associated with this widget
+*/
+SetFieldWidget.prototype.invokeAction = function(triggeringWidget,event) {
+	var newFields = {};
+	if(this.actionIndex) {
+		var data = self.wiki.getTiddlerData(this.actionTiddler,{});
+		if(data[self.editIndex] !== value) {
+			data[self.editIndex] = value;
+			this.wiki.setTiddlerData(self.actionTiddler,data);
+		}
+	} else {
+		var tiddler = this.wiki.getTiddler(this.actionTiddler),
+			updateFields = {
+				title: this.actionTiddler
+			};
+		updateFields[this.editField || "text"] = this.actionValue;
+		this.wiki.addTiddler(new $tw.Tiddler(this.wiki.getCreationFields(),tiddler,updateFields,this.wiki.getModificationFields()));
+	}
+	return true; // Action was invoked
+};
+
+exports["action-setfield"] = SetFieldWidget;
+
+})();
diff --git a/editions/prerelease/tiddlers/ActionSetFieldWidget.tid b/editions/prerelease/tiddlers/ActionSetFieldWidget.tid
new file mode 100644
index 000000000..928f26802
--- /dev/null
+++ b/editions/prerelease/tiddlers/ActionSetFieldWidget.tid
@@ -0,0 +1,33 @@
+caption: action-setfield
+created: 20141025120850184
+modified: 20141106173455527
+tags: Widgets ActionWidgets
+title: ActionSetFieldWidget
+type: text/vnd.tiddlywiki
+
+! Introduction
+
+The ''action-setfield'' widget is an [[action widget|ActionWidgets]] that assigns a value to a specified field of a tiddler. ActionWidgets are used within triggering widgets such as the ButtonWidget.
+
+See also the ActionSetFieldsWidget (note the extra "s") that provides a more flexible way to set the value of a single field.
+
+! Content and Attributes
+
+The ''action-setfield'' widget is invisible. Any content within it is ignored.
+
+|!Attribute |!Description |
+|$tiddler |The title of the tiddler whose fields are to be modified (if not provided defaults to the [[WidgetVariable: currentTiddler]] |
+|$field |The name of the field to be modified. If neither a field or index is specified, then the default field "text" is used |
+|$index |If $field is not provided, specifies the index of a [[data tiddler|DataTiddlers]] to modify |
+|$value |The value to be assigned to the field or index |
+
+! Examples
+
+Here is an example of a button that opens the control panel directly to the "Appearance" tabs:
+
+<$macrocall $name='wikitext-example-without-html'
+src='<$button>
+<$action-setfield $tiddler="$:/state/tab-1749438307" $field="text" $value="$:/core/ui/ControlPanel/Appearance"/>
+<$action-navigate $to="$:/ControlPanel"/>
+Go to Control Panel "Appearance" tab
+</$button>'/>
diff --git a/editions/prerelease/tiddlers/ActionSetFieldsWidget.tid b/editions/prerelease/tiddlers/ActionSetFieldsWidget.tid
index 449a3e029..0f685f603 100644
--- a/editions/prerelease/tiddlers/ActionSetFieldsWidget.tid
+++ b/editions/prerelease/tiddlers/ActionSetFieldsWidget.tid
@@ -1,4 +1,4 @@
-caption: action-setfield
+caption: action-setfields
 created: 20141025120850184
 modified: 20141025120850184
 tags: Widgets ActionWidgets
@@ -9,6 +9,8 @@ type: text/vnd.tiddlywiki
 
 The ''action-setfields'' widget is an [[action widget|ActionWidgets]] that assigns values to the fields of a tiddler. ActionWidgets are used within triggering widgets such as the ButtonWidget.
 
+See also the ActionSetFieldWidget (note the lack of the "s") that provides a way to set the values of multiple fields in a single operation.
+
 ! Content and Attributes
 
 The ''action-setfields'' widget is invisible. Any content within it is ignored.
diff --git a/editions/prerelease/tiddlers/Release 5.1.5.tid b/editions/prerelease/tiddlers/Release 5.1.5.tid
index 558f2a6a7..d22b95a3b 100644
--- a/editions/prerelease/tiddlers/Release 5.1.5.tid	
+++ b/editions/prerelease/tiddlers/Release 5.1.5.tid	
@@ -21,7 +21,7 @@ type: text/vnd.tiddlywiki
 
 !! Hackability Improvements
 
-* [[Introduced|https://github.com/Jermolene/TiddlyWiki5/commit/d8248cfba709a4bcff03ebeec2bdd4683441467f]] (and [[here|https://github.com/Jermolene/TiddlyWiki5/commit/9022dfdf71bbb72791867eaece6c0c4e871dbe8e]]) new ActionSetFieldWidget and ActionDeleteFieldWidget for manipulating tiddler fields
+* Introduced new ActionSetFieldWidget, ActionSetFieldsWidget and ActionDeleteFieldWidget for manipulating tiddler fields
 * [[Enhanced|https://github.com/Jermolene/TiddlyWiki5/commit/4a172125768e3b33c30e725e8550454a9d26c5c4]] the EditTextWidget to allow more control over the sizing of textarea editors
 * [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/13726ef73157d9e9d65ae4027d9c32aaa7cdcc90]] new canned filter for recently modified system tiddlers in [[$:/AdvancedSearch]]
 * [[Added|https://github.com/Jermolene/TiddlyWiki5/commit/c20c935faabbb63f679bc4720b52162c56b6af64]] new system image for videos: [[$:/core/images/video]]