Hi Petr. I think selection filters would be a very good idea. I am very often selecting elements which i don't intend to select. Or trying to deselect an edge which is behind the face, and then selecting the face by mistake. Filters would be very nice indeed... And although the idea behind Moi is to not be reliant of "hand-on-keyboard" i think a similar function to Rhino's Shift/Alt to restrict selections to add/remove would be a good idea for Moi also. It wouldn't interfere with Moi's tablet users, but it would help people using the keyboard...

jonah

EDIT - Sorry i meant to say Rhino's Shift/Ctrl restrictions...