insert key for select/unselect

now for non continuous file selection using keyboard,
we can

1. hold control key
2. move up or down using arrow key
3. use space bar to select/unselect

Can we add insert key also as a key to do select/unselect. It is easier to move hands between ins key and arrow keys than between space bar and arrow keys

This is a low priority request. So dont bother if it is difficult

Insert key works in Norton Commander interface unless you have "explorer style selection" switch on (it is off by default).