tchat  
   lchat  
   logname
   clobber
   dpath
 * nser          (task-specific)
 * cfile1        (task-specific)
 * cfile2        (task-specific)
 * cfile3        (task-specific)
 * cfile4        (task-specific)
   window  
 * epochfo       (task-specific)
 * sepoch        (task-specific)
 * perfo         (task-specific)
 * dper          (task-specific)
 * dpdot         (task-specific)
   nphase  
   nbint  
   nintfm 
   nbdf    
   outfile
   outfileroot
   outfiletype
   plot   
   plotdev
   plotfile
 * plotdnum      (task-specific)
   forcestart
 * errorbars     (task-specific)
   exposure
 * normalization (task-specific)
   spwinbefore
   spwinafter
   rescale
   offset
 * flatexpo      (task-specific)