I would favor having rasmol do as little to the coordinates as possible---turn off the recentering by default, since it only takes one command to recenter, but there is no way to recover from recentering. Being able to hand-dock ligands and multimers would be a great advantage in protein structure prediction and protein design. Loading the ligands from separate files then outputing the complex as a single file would be very useful. ------------------------------------------------------------ Kevin Karplus karplus at soe.ucsc.edu http://www.soe.ucsc.edu/~karplus Professor of Biomolecular Engineering, University of California, Santa Cruz Undergraduate and Graduate Director, Bioinformatics (Senior member, IEEE) (Board of Directors & Chair of Education Committee, ISCB) life member (LAB, Adventure Cycling, American Youth Hostels) Effective Cycling Instructor #218-ck (lapsed) Affiliations for identification only.