Do-Metronome names a macro, with lambda list ((&KEY FREQUENCY ONE-SHOT-TIME NAME) &BODY BODY):
Perform BODY as a metronome facility named NAME, at FREQUENCY or once at ONE-SHOT-TIME.
FREQUENCY is given in seconds, or ONE-SHOT-TIME is given in Universal time. When both are given, the facility will execute at the rate of FREQUENCY until a final execution at ONE-SHOT-TIME.
Defined in file src/metronome.lisp.