We want to build a stage to contain four tabs(windows): Users, Groups, Memberships, and Master View.
To do this, we need to set up a php script for layout.
The panelID, windowID, stageID, and pageID are for TE to keep track of which panel, window, stage, and page actions are called from.
When a new main tab(window) loads containing this stage, we want it to have a name. In this case, the title will be called 'Db2Auth Lab Control Panel'
Finally, we need to specify that the rest of this file will be written in javascript.