CLIC\SET PLOT type
Selects the way the data are displayed. "type" stands for LINE, POINTS,
HISTOGRAM, or BARS. With POINTS, the current GreG marker, as defined by
the GREG\SET MARKER command, is used. With BARS (valid only for the
visibility data, i.e. amplitude, phase, real, or imaginary), 1-sigma er-
ror bars are drawn.