Block : module{	PATH: con "/dis/grid/demo/block.dis"; 	init : fn (pathname: string, ep: Exproc);	slave : fn ();	writedata : fn (s: string);	masterinit : fn (noblocks: int);	reader : fn (noblocks: int, chanout: chan of string, sync: chan of int);	makefile : fn (block: int, let: string): string;	err : fn (s: string);	cleanfiles : fn (delpath: string);	isin : fn (l: list of string, s: string): int;};