-If you have several communicating applications, you can try out the DDE-like functions, by
-using the three classes \helpref{wxDDEClient}{wxddeclient}, \helpref{wxDDEServer}{wxddeserver} and
-\rtfsp\helpref{wxDDEConnection}{wxddeconnection}. These use DDE under Windows, and a simulation using
-sockets under UNIX.
-