I wrote the original patches for Monitor that enabled those hidden classes, and the Pagewapper article that detailed how to apply them I haven't had an opportunity to check on newer versions of VMS, but it's trivial to see if at least some support is still there for them. On a VMS system, try $ MON ETHERNET or any of the other undocumented monitor classes. Then try a command that definitely isn't going to be there $ MON NOTTHERE If the error messages are different - then at least some of the support for the undocumented classes is still there. -- Lee K. Gleason N5ZMR Control-G Consultants lee.gleason at comcast.net From: "H Vlems" <hvlems at zonnet.nl> To: hecnet at Update.UU.SE Sent: Sunday, January 13, 2013 2:21:30 PM Subject: RE: [HECnet] SCSISE adapter -> listings Brian, Speaking of source listings, VMS V4.<mumble> had a "secret" patch for MONITOR.EXE. It enabled the monitor class Ethernet. Is that code still hidden in MONITOR? The MONITOR utility was written in PL/I at the time. Probably rewritten, right? Hans