Added in 1.9.4
/ddeserver [ [on [service name] ] | off]
Turns on or off the DDE service, if you have more than one instance of AdiIRC acting as a DDE service, you should give them different names.
No parameters shows current DDEservice status.
Parameters
[on [service name]] - Turns on the DDE service and optionally giving it a new name.
[off] - Turns off the DDE service.