infile, s, a, "", , , ">Input science data file template name" outfile, s, a, "", , , ">Output science data file template name" phasefile, s, a, "", , ,">Output phase data file template name" timefile, s, a, "", , , ">Input time data file template name (optional)" inmask, s, a, "", , , ">Input science mask file template name (optional)" outmask, s, a, "", , , ">Output science mask file template name (optional)" period, r, a, , 0, , ">variation period of the observed time series" epoch0, r, a, , , , ">the epoch at zero phase" period_unit, s, a, "s", "s|m|h|d", , ">unit of period" epoch0_spec, s, a, "mjd", "mjd|pix", , ">how is epoch0 specified?" mode, s, h, "al"