Procedure NTGND (
	lun: Integer;
	EFN: Event_flag;
	VAR Conb: Net_Connect_block;
	VAR IOSB: IO_Status_block
	);
   EXTERNAL;
{*USER*
 
 Retrieve data from local task's network data queue, and store in CONB.
IOSB defines type of data received. See DECnet-M-PLUS Programmer's Reference
Manual for definitions. Various useful constants, defined in DECNET.TYP,
can help crack the IOSB return codes.
 }