Legal Rhino?

Hi All,

Is there a way to check if the rhino that is installed is legal?

Someone asked me to make an expansion of their software. They already have a plugin and I just created a second plugin for my part. Rhinoceros will already be installed since most people already use their software. Is there a way to check if the Rhino that is installed is legal?

Am I guilty if my plugin gets installed on a computer where an illegal Rhino is installed?

http://discourse.mcneel.com/t/plugin-with-advertising-permissible/29390

This might be a lead.

-Willem