Dear All, I am revisiting a movie I made in chimera some time ago with a painfully long script. In this script, I used a command syntax like this: transition transparency #0 0 0.1 1 copy file 'filename' To change the global transparency of model #0 (with lots of different elements all coloured and represented differently) This command seems to have disappeared. Is there an equivalent way now? The only way I can find is to use transparency in the colordef command, but that will be extremely cumbersome. What is the preferred way to fade a model in and out now? Thanks in advance, Neil Ranson Neil Ranson PhD Level 2 Biochemistry Tutor University Research Fellow Astbury Centre for Structural Molecular Biology IMCB University of Leeds, Leeds, LS2 9JT, UK. EM Image Processing Suite - Miall 6.02 Tel: 44 (0) 113 343 7065 email: n.a.ranson@leeds.ac.uk