Yeah, what Gareth said.
My original response lists the install files for the license server.
Detailed information can be ffound in chapter 6 of the Installation and
Licensing Guide for Arbortext Editor, Styler, and Architect. A PDF shipped
with Editor, found in the docs directory in the install tree.
Also, everything we said will change with ... 6.0, right? There will be a
new (to Arbortext products) licensing model for 6.x and up. It has been in
use with other PTC apps for some time.