tchat   
   lchat   
   logname 
   clobber 
   dpath 
 * cfile1        (task-specific)
   window   
   dtnb    
   nbint   
   nintfm  
   rebin   
   nbdf     
   itre    
   itremo  
   outfile 
   outfileroot 
   outfiletype 
   plot    
   plotdev 
   plotfile 
   gapfill 
   forcestart 
 * errorbars     (task-specific)
   exposure 
 * normalization (task-specific)
   spwinbefore 
   spwinafter 
   rescale 
   offset 
 * fast          (task-specific)