I would like to use Chimera to make a movie in which multiple models or chains move in different directions simultaneously. The movie illustrating myosin thick filament analysis (http://www.cgl.ucsf.edu/chimera/animations/movies/myomovie.mov) is a good example. I am not sure if this post (http://www.cgl.ucsf.edu/pipermail/chimera-users/2006-June/000843.html) on interpolated model motion is relevant, or if the 'movemodel' command imagined there actually exists in some patch that I do not have. If that proves too difficult (I have little programming experience) I would like to be able to hold one model or chain stationary while moving another. I can do this by using the model panel to make one model inactive while entering a movement command to move the active models, but I have not found a way to do this through the command line. Is there a command to activate/inactivate models, or another way to move some models/chains and not others? Thank you for your help. Michel Dedeo Francis Lab Department of Chemistry UC Berkeley