Script
(GUIKit Package Symbol) Script[scriptcode] defines a script to be used either on load or during an event.
ScriptSource is an option to Script which specifies a location to load the script code from.
SetPropertyValue[name, value] sets a widget property value.SetPropertyValue[{target, name}, value] or SetPropertyValue[{target, name} -> value] sets a widget property value, ...
SetWidgetReference[name, value] registers a widget with string name in the widget registry for the current interface.
SymbolicGUIKitXMLToWidget[body] converts a GUIKitXML representation into the equivalent user interface expression.
Tabs
(GUIKit Package Symbol) Tabs is an option value for WidgetLayout.
UnsetWidgetReference[name] removes a widget from the registry with a name in the current interface.
WidgetAlign[] is a widget layout placeholder that provides an alignment marker. WidgetAlign[{ref, After}, Before] makes a specific request for the next widget to align to ...
WidgetFill[] is a widget layout placeholder used when adjacent widgets should not dominate the layout space.
WidgetGroup[{content, ...}] specifies custom layout settings for how the content widgets are displayed.