If you are trying to or install this post, you'll likely be working with: .gpp file : The post-processor script containing the logic.
: The Machine ID file that defines the machine's kinematic structure. 1GTX039
It looks like you're referring to the post-processor for SolidCAM . This specific post is typically used for CNC machine programming, specifically tailored for certain milling or turning configurations. If you are trying to or install this