ref: d7809194db6f52a6fc87a6d10bff7e78cc03c4d2
dir: /module/timers.m/
Timers: module { PATH: con "/dis/lib/timers.dis"; Sec: con 1000; Timer: adt { dt: int; timeout: chan of int; start: fn(msec: int): ref Timer; stop: fn(t: self ref Timer); }; init: fn(gran: int): int; shutdown: fn(); };