Hi Rob,
Machine home. I usually add a button that does something like;
local inst = mc.mcGetInstance()
mc.mcCntlMdiExecute(inst, "G00 G53 Z0\nG00 G53 X0 Y0 A0)
That is close to what I use but I am not at the machine right now.
For mere mortals like me it can be a real time saver, especially when something goes wrong.(which never happens!!!)
Mike