From: utzoo!decvax!cca!gwyn@Brl@sri-unix
Newsgroups: net.unix-wizards
Title: Re:  Sort Problem
Article-I.D.: sri-unix.3140
Posted: Mon Sep  6 18:55:53 1982
Received: Wed Sep  8 01:02:30 1982

From:     Doug Gwyn 
Date:     4 Sep 82 23:09:07-EDT (Sat)
One could always specify multiple sort keys; the later keys would
only be used when earlier keys tied, so there would be little
additional overhead.

The entire-line ordering is of course only invoked when all keys match.