Syntax is (without the spaces):

function amplitude +/- y-offset @ period +/- x-offset (in seconds)

e.g. sin10-30@600-3600 — sinewave of amplitudes -10 and 10; offset by -30 (i.e. between -40 and -20); period of 600 seconds; offset by -3600 seconds (1 hr)*

Function supported are:

• sin (sine)
• cos (cosine)
• saw (saw wave)
• sq (square wave)
• sc (S-curve)
• rand (repeatable random number)