[gobbles]

Hi

Beware of my answer for I have just owned this program for 1 week and I could only afford the normal version, not the pro :(

But in the normal version you can import pictures as you like, and you can assign the pictures with magnets(wich is the ones that make stuff stick togther) so doing your own stencils should be easy...

In my version there is a full periodic table where each substance is a little picture.

Go for it, it's great!