Reality Factory

Is there a way to check if a key is not down?
For instance:
if (IsKeyNotDown(What ever key)).

Just so that I'm able to select weapons without jumping to the next one every frame but instead every time i press the button. Theres probably something in the manual but i can't find it so is there anyone that could help?

Thanks

Negation should do the trick. In Simkin it's as follows, if I remember correctly: or