[LDCad] recent submodels

[Milan Vančura]

In current implementation, I can easily toggle between the two last edited submodels using End key. Nice, but often I would like to be able to easily access the three last edited submodels.

Ah, I have had the same problem many times. But instead of "cycling over N submodels" and "setting N" with hotkeys (which look too much as "machine interface" more than "human interface" for me), I'd prefer a variation of simple Alt-Tab hotkey known from Windows or Linux: showing a list of all submodels sorted by the time of "visit".