.WG1 File Extension Information

What program uses .WG1 file extension?

Program : 1-2-3 Worksheet
Program Website: 1-2-3 Worksheet
Company : IBM
Company Website: IBM

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