-'Alt+Click' copies a part and all child parts.
-'Ctrl + Click' on any part goes to page in partlist
-'x' does increase the symmetry, 'ctrl + x' decreases it
-'c' toggles snap-to-angles
-'w','a','s','d' rotate parts, 'q' and 'e' turn them, 'shift' + the letter gives you finetuning, Spacebar resets the rotation of the part you're handling
-'Shift + Click' grabs the whole ship
-'ctrl + z' undo