how to convert 3d pdf file using catia?

I'm going to guess, since I don't use Catia, but it the process might be something like "save as > pdf > check the '3d pdf' or '3d' option.

That's how it works for Solidworks anyway, I'm sure a Catia user will be along shortly to set us both straight.

Here is a plugin:
http://www.theorem.com/3DPDF/3dpdf-catiav5.htm

Weird how the option mentioned above hasn't popped up on any online searches, as it seemed like the norm to me.