@Simeon
If you double tap a word in a program, a popup with “cut, copy, paste, and lookup” will appear. If you select lookup, you’ll be taken to that word in the Codea Reference. If that word isn’t in the reference, it will still bring up the Codea Reference screen, but it won’t let you enter any of the topics or allow you to scroll to see the other topics. The only thing you can do is tap somewhere in your program to close the reference. If the reference screen is shown using lookup, it should still let you scroll and enter any topic even if the selected word isn’t in the reference.