[NiLuJe]

stop lab126_gui stops the UI, and still leaves X running (which you'd stop by, you guessed it stop x).

If you kill x, start x restarts everything. If you don't, start lab126_gui.

(Why lab126_gui and not framework? Because it's a meta event, and handles a bunch of other things more neatly (the progress bar, among other things)).

You will have to trap SIGTERM if this is used in a KUAL script, because stopping the framework propagates a SIGTERM to everything the framework launched (meaning KUAL & the script it ran). Check the ScreenSavers/Fonts KUAL extension for examples of how I did it for X or the framework (because busybox's trap implementation is finicky, and so is upstart, so you can potentially confuse upstart by doing it wrong).