Try holding ctrl and left click.. ot to highlight a group from top to bottom is shift +left click. Not sure if it work on seabreese though but its a basic windows command !
I must be blind, but the only place i can find to delete a pic is when you open it it asks to edit, then that opens and you can delete. I tried to highlights using the mouse and box way - no delete option Tried ctrl left click - no dice.
