DEFINITION MODULE TermChan;
(* Extra interface(s) to the terminal channel,
   not included in the Standard *)

FROM   IOConsts  IMPORT ReadResults;
IMPORT IOLink;


TYPE
  ChanId            = IOLink.ChanId;


PROCEDURE LookKey (    cid : ChanId;
                   VAR ok  : BOOLEAN;
		   VAR ch  : CHAR;
		   VAR res : ReadResults);
(* Performs 'no-wait' input:
   If there is a character available on TermFile channel cid, return ok TRUE
   and the results of a Look(cid/dtp, ch, res);
   otherwise return ok FALSE. *)


END TermChan.