Chris, I checked the UIUCMVD LISTSERV (by way of the RELEASE command), and its copy of BITEARN NODES is dated 12/12/86 (just a little stale ;-) ). The LINKSWT FILE, which decides which links are more important than others, is also out of date (11/25/86, vs. 03/15/87 for my copy). Phil, Could you please get a fresh copy of BITEARN NODES and LINKSWT FILE? If you can't get them from anywhere else, I'll send you mine, but it looks link either John Voigt <SYSBJAV@TCSVM> or Mark Williamson <MARK@RICE> are better choices. Ross Patterson Rutgers University