procedure SelectFile(FType: TypEntry);
extern;

procedure RestoreFile(IOFile: IOFileEntry);
extern;

procedure DiscardFile;
extern;

procedure InitIO;
extern;

procedure LoadFileDescriptor;
extern;

procedure PostsetBuffer(FileOp: StdProcFuncs);
extern;

procedure DoFileChecks(FileOP: StdProcFuncs);
extern;

procedure FileOperation(Which: StdProcFuncs; Form: IOFormat);
extern;

procedure ReadBuffer;
extern;

procedure WriteBuffer;
extern;

procedure ReadNumeric(ReadMode: InputKind);
extern;

procedure WriteScalars(WriteMode: OutputKind; Format: FormatKind);
extern;

procedure WriteString(ActualLength: ObjectValue; Format: FormatKind);
extern;

procedure ReadLayout;
extern;

procedure WriteLayout;
extern;

procedure FileFunction(WhichFunc: StdProcFuncs);
extern;

procedure LoadCAPSize(ForPackedCAP: Boolean;
			BounPairBlock: RuntimeAddress);
extern;

procedure ArrayArrayOp(Which: StdProcFuncs;
			UpLowBound,UpHighBound: ObjectValue;
			UnpackedRep,PackedRep: TypeRepresentation;
			PkLowBound,PkHighBound: ObjectValue);
extern;


procedure ArrayCapOp(Which: StdProcFuncs;
			UpLowBound,UpHighBound: ObjectValue;
			UnpackedRep,PackedRep: TypeRepresentation;
			PkLowBound,PkHighBound: CAPBound);
extern;

procedure CAPArrayOp(Which: StdProcFuncs;
			UpLowBound,UpHighBound: CAPBound;
			BpRep,UnpackedRep,
			PackedRep: TypeRepresentation;
			PkLowBound,PkHighBound: ObjectValue);
extern;

procedure CAPCAPOp(Which: StdProcFuncs;
		   UpLowBound,
		   UpHighBound: CAPBound;
		   BpRep,UnpackedRep,
		   PackedRep: TypeRepresentation;
		   PkLowBound,
		   PkHighBound: CAPBound);
extern;

procedure HeapRequest(Requested: TypeRepresentation);
extern;

procedure TailorRequest(SelectorRep,SelectedRep: TypeRepresentation);
extern;

procedure HeapOperation(WhichPf: StdProcFuncs);
extern;