| Subject | English | Danish |
| comp., MS | control message | kontrolmeddelelse (An application-readable message requesting the execution of a specific operation on the client side) |
| commun., comp. | Internet Control Message Protocol | ICMP-protokol |
| commun., transp., nautic. | merchant ship reporting and control message system | system til rapportering og kontrol af handelsskibsfarten |
| commun. | power control message | effektniveau-meddelelse |