> Huh? Why does it look so different? The \(bs symbol > looks more like a black ball with a white shadow even on > the original Troff manual, but the link to Wikipedia looks > like a bell in a circle.
This page also shows the evolution of the AT&T logo: http://logos.wikia.com/wiki/AT%26T The logo in most incarnations of the Troff User's Manual found on the web appears to be the version from 1983 to 2005 (either the older variant of the death star with more stripes or the newer one with fewer stripes), but here's a scan of an older manual that still shows the "bell" logo: ftp://bitsavers.informatik.uni-stuttgart.de/pdf/codata/Unisoft_UNIX_Vol_3_Aug82.pdf (See page 295 of that document.)
