User Dlls

Do you use User Dlls in Mathcad 15? If so, how do you use them and how extensively do you use them?

Do you use them primarily for your own use or set up user dlls for other people in your company?

We are looking for more information on how they are used, so we can better define them for a future release of Mathcad Prime.

I will be out of town for two weeks, so won't be able to respond back until I return

Thanks,

Mona