Option for alternative to 'CTRL' bind:
CTRL+SHIFT
or CTRL+ALT

If using no bind, the lag between my keyboard and mouse means that I start typing but my keyboard is still on the 'old' PC... sometimes doesn't catch up, because just typing makes it think that I deliberately want to remain.

And if using CTRL, sometimes I've been trying to copy-paste from one screen, but by holding CTRL I accidentally moved to the other. Dangerous for pasting things in the wrong window!

I'd like the option to choose a double-key combination, being CTRL+SHIFT or CTRL+ALT, please.