/mark
/m
Makes the selected object appear in an important section of the lower left menu and be fully highlighted.
/unmark
/um
Remove the allocation from the selected object.
/unmarkall
/uma
Remove the allocation from all allocated objects.
/groupmark
/gm
Allocates an object to the entire group.
/groupunmark
/gum
Remove the selected object from the selection for the entire group.
/ignoregroupmarks
Ignore the marks of other members of your group.