_RL sfluxperiod
& sfluxperiod, sfluxStartTime,
I sfluxStartTime, sfluxperiod, sfluxRepCycle,
I 'exf', 'sflux', sfluxperiod,
I sfluxperiod, exf_inscal_sflux, sfluxconst,
& sfluxRepCycle, sfluxperiod, sfluxStartTime,
sfluxperiod = 0.0 _d 0
I sfluxfile, sfluxRepCycle, sfluxperiod,