We've made some improvements to the "longbond" command (breaks non- physical bonds that show missing structure segments) which are not backward compatible with the previous version. We are wondering if anyone makes any significant use of the longbond command in scripts. If you do, we would consider making a new command with the improved behavior and leaving the longbond command unchanged for backwards compatibility. So speak up if this affects you. --Eric Eric Pettersen UCSF Computer Graphics Lab pett@cgl.ucsf.edu http://www.cgl.ucsf.edu