From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Mon,  9 Oct 1995 09:54:15 -0400
From: howard@plan9.att.com howard@plan9.att.com
Subject: 'centered around'
Topicbox-Message-UUID: 2c866904-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19951009135415.IouETAgBIOJy5yLAGx4KV0Xy09Q-qD2jZTiD_BgpZgU@z>

> I could only find two occurances of this in the online manuals
> (and none in /sys/doc): road(7) and pip(8), and road(7) is mathematically
> sound...

I think ken wrote exactly two man pages.  Guess which ones.