Why is this code throwing a "unexpected token: boolean" error?

what does exlamation mark mean in this context?

I want to make my own small library, simply because I'm making a lot of functions that I'm including in various different sketches. Is this easy to do or is it not worth the effort? Thing is I'm used to languages like python where it's a total breeze (no compiling) so I guess I'm spoiled.

How can i get continuous calls to keyPressed() if I am holding down a key? I can't seem to find anywhere on google that will tell me

Is there any way to auto-save documents in the processing IDE, say every 10 minutes?  If there is nothing like that built-in, is there some kind of linux application that can do it for me?

Is there someway i can automatically clean up the look of my processing code by making the spaces regular etc. ?  It would just make things a little clearer

I need to move a rectangle by pressing a key, but i need it to happen twice using the same key.

if i use a for loop to fill a load of variables between setup() and draw() i get the error 'expecting EOF, found for'. 

I'm using the keyboard to control a sprite. Generally the movement is quite smooth but sometimes it gets a little jittery and pauses for a second before moving when i change direction.