Andrea, again thanks for the Rendering.tex update.  I checked in those + Tips.tex + Plugins.tex from the other day.

Feedback on Cuda.  GG upgraded his cuda system today and the nvidia drivers. 

1) The "cuda" pixel format does not work because Cinelerra is not that sophisticated; i.e. when using "cuda" pixel format certain things have to be set up and they are not.

2) I removed the 2 ffmpeg plugins, F_scale_cuda and F_yadif_cuda from the manual and in the plugin.opts file.  GG tried them again and they do show up as plugins when you enable cuda nvcc and enable nonfree.  So you can drag them to the timeline but when you try to actually use them, it reports an error of "not implemented".  In plugin.opts, hwupload_cuda and thumbnail_cuda were already commented out as unusable. 

I think that that was the last of the cuda unknown, but if not please let me know as I want to keep the manual correct.