implement Pipes; include "sys.m";    sys: Sys;    FD, pipe, print: import sys; include "draw.m"; Pipes: module{    init: fn(ctx: ref Draw->Context, args: list of string);}; init(ctx: ref Draw->Context, args: list of string){    sys = load Sys Sys->PATH;     # Create an array of file descriptors. This must have a pre-determined size.    descs := array[2] of ref FD;         f1 := pipe(descs);    if (f1 != 0) {        sys->fprint(sys->fildes(2), "Failed to created pipe.\n");        exit;    }     print("Pipe created successfully.\n");}