Draw the axis labels and title on the plot
If no value is specified on the command line, then if COLUMNS is TRUE the value is taken from the
column heading in the data file, otherwise the value of the global parameter PONGO_XLABEL is
used. If PONGO_XLABEL is not defined, the value "
"
is used.
If no value is specified on the command line, then if COLUMNS is TRUE the value is taken from the
column heading in the data file, otherwise the value of the global parameter PONGO_YLABEL is
used. If PONGO_YLABEL is not defined, the value "
"
is used.
[The value of the global parameter PONGO_TITLE is used. If PONGO_TITLE is not defined, the value
"
"
is used.]