> I wish the notebook to propose a similar menu in the future...
> If you find it useful, with some help I can add other languages or new
> commands.
"Ultimately, it is hoped that menu as it is directly integrated into
the Sage notebook."
Well, that would be really neat. People have been asking for
something like this for years, and especially if it could have
symbolic representations of things (just for visuals), so that someone
could click the integral sign with endpoints and then the "missing
pieces" would be highlighted in a cell... Keep it up!