However, ECLiPSe will respond to interrupts while asleep. On most operating systems, interrupts will terminate the sleep prematurely.
Success:
      [eclipse]: sleep(0.3).
                           % short sleep
      yes.                 % "yes" appears after 0.3 seconds.
      [eclipse]: sleep(63072000).
                           % long sleep
      yes.                 % "yes" appears after 2 years.