AIPS HELP file for GRCHAN in 31DEC09

As of Sun Nov 22 0:12:55 2009

HELP SECTION

GRCHAN
Type: Adverb  (Real)
Use:   TV graphics channel to use.  GR2CHAN is used when two
       graphics channels need to be specified.  XAS supports 8
       graphics channels the last of which is used as a black
       background.  Note that the graphics channels may be on or off
       separately, but they scroll together.

EXPLAIN SECTION