"code","name","usage"
"an","Android","Android"
"as","AtSpi","X11 desktop via AT-SPI 1"
"a2","AtSpi2","X11 desktop via AT-SPI 2"
"em","Terminal Emulator",""
"fv","File Viewer",""
"hd","Hurd","The Hurd"
"lx","Linux","Linux"
"pb","PcBios","MS-DOS"
"sc","Screen","patched screen program"
"wn","Windows","Microsoft Windows"