I noticed in a lot of older scenarios, they sometimes have a pop-up which appears, giving you options on something (I'm probably not explaining this well, but still). What's the code for this? I had a glance through the API, and I couldn't track it down. Am I being dumb or is it just a feature that used to be around?
EDIT: This is what I mean - go to http://www.greenfoot.org/scenarios/642 and click "Editor Mode"