.GR4 File Extension Information

What program uses .GR4 file extension?

Program : Pathloss Network File Sharing File
Program Website: Pathloss Network File Sharing File

Extensions starting with

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | #-0-9