From: utzoo!decvax!cca!JEK@SCRC-TENEX@sri-unix
Newsgroups: net.unix-wizards
Title: mx2.c
Article-I.D.: sri-unix.2455
Posted: Wed Aug  4 21:49:38 1982
Received: Thu Aug  5 06:30:22 1982

Date: Friday, 16 July 1982  17:14-EDT
No new code should be written using mpx files unless it needs to run
on 11's.  Come 4.2 they will not exist and will not be supported.
I suppose if you were masochistic, you might conditionalize code
to either use mpx stuff #ifdef pdp11 and otherwise use the 4.2 IPC.
But the mapping is not clear.