SLEEP
    ; the HANG command can use fractional seconds; the Awake line will be slightly off due to processing time
    read "How long to sleep in seconds?: ",sleep
    write !,"Sleeping... time is "_$ztime($piece($ztimestamp,",",2,2),1,2)
    hang +sleep    ; use + to cast numeric, if non-numeric will hang 0
    write !,"Awake!  Time is "_$ztime($piece($ztimestamp,",",2,2),1,2)
    quit