[Scene_Cast]

Thanks! I didn't know about tee. My gripes were from working with something like this ( http://i.imgur.com/LnAvV.jpg ), and then trying to emulate that in CLI. (The picture shows a graph-based image processing system, Blender's compositing mode) --- Source: http://www.blender.org/typo3temp/pics/ca33eb4833.png

[ori_b]

That should probably get a domain-specific tool regardless; Generalizing the command line UI is probably going to end up getting too hairy for the common case.