is there a way to change/delete the code in the bots when you have messed up? 

uh and btw the whistle was about to destroy my ears, is there a way to turn the sound down, besides turning the game sound down.

never mind you just drag the program out of the program window

https://gyazo.com/ed2432b098191c8bd98638baf20c21a8 Gif 

If you have a lot (and I mean a lot), you can use Forever to group them all, and drag all commands out at once :-)