It's just the .PRX files used to run the Green Screen. Green screen is like a test to see if your GPS is working/recieving. Basically it looks like the GPS info screen in Map This! but against a green background, that's it. I think it was Deniska's proof of concept for getting the PSP-290 working with his software.
No kudos to me. Kudos to Deniska and his helpers. I'm just lucky.