Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!bbn!gateway!RELAY.NSWC.NAVY.MIL!dsill
From: dsill@RELAY.NSWC.NAVY.MIL
Newsgroups: comp.emacs
Subject: Looking for the stack.el(?) stuff...
Message-ID: <39222@bbn.COM>
Date: 28 Apr 89 11:53:46 GMT
References: <MGH.89Apr27105333@intelob.intel.com>
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>From: Mike Heavin <littlei!omepd!mgh@uunet.uu.net>
>Some time ago, I noticed (and saved) a posting in this group that contained
>code for implementing a stack mechanism in emacs.  You could save a position,
>text, a window-configuration, a register, etc. on the stack and then pop the
>elements off of the stack as desired.

I believe you're looking for:
positions	  89-01-25
     Bard Bloom, <bard@theory.lcs.mit.edu>
     Enhanced registers, motion undo.

-Dave (dsill@relay.nswc.navy.mil)