[Paraview] Editing paraview (specifically ParaView/Python Scripting) wiki

[Alex Lindsay]

I just submitted an account request for the paraview.org/Wiki. 
Hopefully, once I have an account, I can add this myself... I want to 
add some short documentation to the Python Scripting page, explaining if 
you're trying to do multiple Render() calls in the same python session, 
you must not close the ParaView figure window that appears after the 
first Render(). Closing the figure window after any Render() will make 
any subsequent Renders() exit the python interpreter (whether pvpython, 
ipython, or the standard python interpreter) with an error like the 
following:

XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0"

I probably spent an hour on google, stack exchange, and various 
help/forum boards trying to figure out why a second call to Render() 
would cause the interpreter to exit. By blind luck I realized that if I 
didn't close the figure produced by the first Render(), then subsequent 
Render() 's would work perfectly fine. Some doco on this might help 
other new users if they by chance like closing windows that are no 
longer needed and are then perplexed when they try and Render a new object.

Anyways, that's long-winded.

Alex