DOS-Namer is a very handy application for all those who often copy files from Mac to PC. Win95/WinNT or DOS require the 3 Char extension (for example: ".txt"). The Mac not. This application simply adds the correct extension to the filename. If you have to copy files to DOS computers you know that they only support 8 Chars + the extension, so DOS-Namer can also short the Mac filenames to any lenght from 1 to 27 Chars.