AIPS HELP file for DOINVERS in 31DEC19

As of Wed Jan 23 20:26:24 2019

HELP SECTION

DOINVERS
Type: Adverb   (logical,  > 0  =>  true)
Use:  If true, do the reverse of the "normal" operation.
Null Value:  false (-1)
Verbs:
  IMSTAT....Determine image statistics inside BLC - TRC (if
            DOINVERS true) or outside (if DOINVERS false).
  TVSTAT....Determine image statistics of TV image from a blotch
            region.  DOINVERS true => do statistics outside
            blotch regions; false => do inside blotch regions.
Tasks:
  BLANK.....Blank regions inside (DOINVERS false) or outside
            (DOINVERS true) blotch regions drawn on the TV.
            Ignores DOINVERS on other blanking methods.
  BLSUM.....Determine image statistics inside (DOINVERS false)
            or outside (DOINVERS true) blotch regions drawn on
            the TV.
  PRTPL.....Draw a plot file on a dot matrix printer.  DOINVERS
            true => plot a positive image (white on black);
            false => plot a negative image (black on white).
            *** NOTE: most printers do a poor job with true. ***

EXPLAIN SECTION