WK1 file extension is for Spreadsheet Lotus 123 version 2.x - Symphony 1.1+
Similar to WK1
4GE - Informix 4G Compiled source code file4GL - Informix 4GL language source code file
4MD - Musical file
4SW - 4DOS Swap file
4TH - Forth language source code file ForthCMP - LMI Forth
668 - Music the mixing is always at 12048Hz
669 - 669 Composer 8-channel MOD Music File
View all in File Extensions