_RL hfluxperiod
& hfluxperiod, hfluxStartTime,
I hfluxStartTime, hfluxperiod, hfluxRepCycle,
I 'exf', 'hflux', hfluxperiod,
I hfluxperiod, exf_inscal_hflux, hfluxconst,
hfluxperiod = 0.0 _d 0
& hfluxRepCycle, hfluxperiod, hfluxStartTime,
I hfluxfile, hfluxRepCycle, hfluxperiod,