_RL tidePotPeriod
& tidePotPeriod, tidePotStartTime,
I tidePotStartTime, tidePotPeriod, tidePotRepCycle,
I 'exf', 'tidePot', tidePotPeriod,
I tidePotPeriod, exf_inscal_tidePot, tidePotconst,
& tidePotRepCycle, tidePotPeriod, tidePotStartTime,
tidePotPeriod = 0.0 _d 0
I tidePotFile, tidePotRepCycle, tidePotPeriod,