AIPS HELP file for DO3COL in 31DEC19

As of Wed Oct 23 3:53:07 2019

HELP SECTION

DO3COL
Type: Adverb   (Real)
Use:  Controls whether and how a plot program may use full 3-color
      graphics line drawing in generating a plot.
Null value:  Usually <= 0 -> no color graphics.
Tasks:
  VPLOT....Plots visibilities one baseline at a time.  DO3COL controls
           whether all IFs are given the same color symbols or whether
           they get a range of colors.

EXPLAIN SECTION