Entity Selection Issue

I'm having an issue with selecting multiple entites for a copy or move, etc. I used to be able to individually select multiple items, now I can only do multiple items if I drag a pick box around them.

I must have inadvertently changed something in settings but I cant' find it. I'm using DraftSight, 2017 x64 SP2. Can anyone point me to the setting which controls the entity selection?


Thanks