Signature

[Edward Mendelson <em36@xxxxxxxxxxxx>]

This may not be news, but I didn't know about it. A download of 
Signature install disks seems to be here:

https://archive.org/download/autodesk-3-d-studio-4.1c-3.5-1.44-mb

Scroll down to the foot of the page.

I haven't downloaded or tested, but I haven't seen this elsewhere.