M2_HIDE does what it says and only that, it hides an element, but it cannot remove the space it leaves behind and it does not work with U32NUMFN, so one needs to hide a V/H/GRIDLIST in that case.
STRLIST turned out to be the least hassle-free solution to hide some top level menu elements, if you need VSB.
Different strings are shown according to the state of some variables and lower menu entries are assigned with setRoot in the callback procedure.
I think creating different dialog boxes would have been way too over-complicated with Menu(X)2L.
Is there any way to adjust the vertical spacing in-between strings of STRLIST?
Mit freundlichen Grüßen