; DOPOS
;---------------------------------------------------------------
;! selects solutions for positions of model components
;# ADVERB ANALYSIS
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
;---------------------------------------------------------------
DOPOS     LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
----------------------------------------------------------------
DOPOS
Type  Adverb   (Logical(2,4),  > 0  =>  true)
Use:  A logical array, dimension (2,4), associated with GPOS, the
      initial guess of the (X,Y) pixel location of a  component.
      > 0 -> Let parameter vary;  <= 0 -> Keep parameter fixed.
Null Value:  true (all 1).
Verbs:
   TVCUBE........Verb to load a cube into tv channel(s) & run a movie.
                 DOPOS true causes a relative coordinate pointer to be
                 plotted in each frame.
   TVMOVIE.......Verb to load a cube into tv channel(s) & run a movie.
                 DOPOS true causes a relative coordinate pointer to be
                 plotted in each frame.
Tasks:
   DBCON.........Concatenates two UV data sets.  DOPOS true causes
                 task to check source coordinates and shift data if
                 needed.
   IMFIT.........Fits Gaussians to portions of an image.  Returns in
                 DOPOS the error bars in the fit.
   JMFIT.........Fits Gaussians to portions of an image.  Returns in
                 DOPOS the error bars in the fit.
   SLFIT.........Task to fit gaussians to slice data.  Returns in
                 DOPOS the error bars in the fit.
   UVFIT.........Fits source models to uv data.  DOPOS is used only
                 if INLIST is blank.
   UVGIT.........Fits source models to uv data.  DOPOS is used only
                 if INLIST is blank.
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