; DOTWO
;---------------------------------------------------------------
;! do we make two of something
;# ADVERB TAPE
;-----------------------------------------------------------------------
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;-----------------------------------------------------------------------
DOTWO     LLLLLLLLLLLLUUUUUUUUUUUU CCCCCCCCCCCCCCCCCCCCCCCCCCCCC
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DOTWO
Type:  Adverb  (scalar)
Use:   To select whether two of something is made/done/...
       In edit applications, true means display two observables from the
       primary editing baseline or antenna.  False means display only
       the one actually used for editing.
Null value:
       none.  <= 0 => false,   > 0 => true.
Tasks:
   EDITR.......Interactive baseline-oriented visibility editor using the
               TV.
   EDITA.......Interactive TV task to edit uv data based on TY/SY/SN/CL
               tables.
   SCIMG.......Full-featured imaging plus self-calibration loop with
               editing.
   SCMAP.......Imaging plus self-calibration loop with editing.
   SNEDT.......Interactive SN/CL/TY/SY table editor using the TV.
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