How to extract data from .pf file?

I'm making a parameter file that contains constant variables. My goal is to make an m.file as generic as possible. Currently, the parameter file is saved as a .pf file, and simply contains things like

x = 10;

The parameter file is another window in MALTAB editor, just saved as .pf.

How can I extract this information from the .pf file and initialize it in my matlab file?

Thanks,

Gauss.