Add help to, and document x.interact() on the web?

[jypeter]

x.interact() is quite important if you want to do some interactive work with vcs (in my case resize the canvas, click on the cells to check their values), but:

• there is no docstring (we may be able to live with that)

Help on method interact in module vcs.Canvas:

interact(self, *args, **kargs) method of vcs.Canvas.Canvas instance
(END)

• there is no help at all about that on the web site (or at least none I found after spending my morning checking the web site). A Google search of "uvcdat interact()" did not yield any information that would help an end-user. How is a new spontaneous (e.g. not from a place where there are already vcs users) user supposed to learn about that?

I like the fact that I get a reminder message that I can leave the interact mode by typing 'q' in the canvas. I wonder if you should display a message about interact when x.init() is called, but only in an interactive session (if this can be detected)

Of course, it would be better if I did not need x.interact() + q and I could interact with the interpreter and the canvases at the same time, like in the (good) old times but it seems I have to forget about that

[doutriaux1]

@davis278 where do you think this should go? It's got a nice doc string so should appear in readthedocs.