@p @GhostOfMoshe @Jonny @Doll @koropokkur @RedTechEngineer @ins0mniak @Captain80s @NonPlayableClown @Leyonhjelm @thendrix @redneonglow Correct, for example many old CNC machines still use it, because nobody bothered to port the software to newer versions and certify it really does what it's supposed to. The MS-DOS 6 floppy based mill I used in high school is still there and operational, at least last time I asked.