[273,57]	Playing with RSX send/receive directives.

		Demos of send/receive. No known use.

CHAT.C		General purpose.

RECV.C		Needs SEND.C .

SEND.C		Needs RECV.C .

BABBLE.C	this slime was a prototype for eg DEQ.C.
 GABBLE.C
 ABBLEV.H	Play with vsda$, vrcs$
 ABBLE.H	Crude play with send, receive, unstop etc.
