menuselectionpersistent
Enables persistent selections for the currently displayed menu and also
restores a previously saved selection. Probably most efficient inside
"menuinit". The position is restored during execution of this command,
so the menu entry has to already exist and the alias with the last
position has to be read from saved.cfg. In autmatically created menus
it may be necessary to execute the command with a short delay (see
examples in this commit).
DOCREF menuselectionpersistent