Great work there, really useful even if it still could be a bit better at finding papers.

Is there some way to undo a penstroke? I seem to only be able to start drawing all from scratch. Would love being able to cancel (click outside and close) the do you want to save/discard changes dialog. Also, if you quickly click the detect and drwaing button a few times the program crashes.

But, a fantastic application for being alpha and it has very great potential