ref: b7af62b250e5dff30320a181ca9d53ab5a7c276d
dir: /opt/misc/appl/hello.b/
implement Hello; include "sys.m"; sys: Sys; include "draw.m"; Hello: module { init: fn(ctxt: ref Draw->Context, argv: list of string); }; init(ctxt : ref Draw->Context, argv: list of string) { sys = load Sys Sys->PATH; sys->print("Hello World!\n"); }