Mathcad Prime 2.0 clipboard format

Hi,

I've searched this Forum, Mathcad Help, as well as a broader search of the internet and haven't found what I'm looking for. What I'm after is documentation on Mathcad Prime 2.0's clipboard format. You know, like if I copy a math region -- what does Mathcad put onto the clipboard?

I know it puts only one format of data onto the clipboard: CF_UNICODETEXT.

I also know the syntax is pretty simple, and somewhat reminiscent of RPN, except the operators are prefix instead of postfix like in RPN. Something like this for x squared, for example: (^ x 2)

It's pretty obvious it's defined somewhere. My question is, is it defined somewhere that I can access? Or is it limited to PTC developers?

Thanks,

Bob