There doesn't seem to be any help for this editor, unlike pygtkeditor. I've checked the usual ctrl- shortcuts but not found a 'goto line no.' one like pygtkeditor has or one or two others than the basics:
Ctrl-F=find/replace (better than pygtkeditor), Ctrl-G=find next, Ctrl-S=Save (and doesn't pop up another "untitled" new document window like pygtkeditor does if you closed the untitled file down before, hurrah), Ctrl-W=close window, Ctrl-O=open.

I could read the source code more I guess (thats where I got W/O from) but I didn't notice many others. Khertan's project page for it doesn't help either, just lists features and "about"/brief history.