polarization1, polarization2, ...
Select the list of polarizations to be displayed by specplot.

EXAMPLE
-------

1. Select a single polarization.

   0>specpol I
   Specplot polarization selections: I
   0>

2. Select a list of polarizations.

   0>specpol I,Q,U,V   
   Specplot polarization selections: I, Q, U, V
   0>

3. To see what polarizations are currently selected, omit all arguments.

   0>specpol
   Specplot polarization selections: I, Q, U, V
   0>

ARGUMENTS
---------

polarization1, ...  -   A list of one or more names of polarizations.
                        Type 'help polarization' for the list of
                        recognized names.

To see the current list omit all arguments.

CONTEXT
-------
The specplot command plots scalar and vector averaged visibility
spectra. Visibilities are selected by polarization, time range, UV
radius range, and baseline groups. The specpol command is responsible
for supplying a list of polarizations.

Where more than one polarization is given, spectra can be plotted for
each of them separately. The 'specorder' command can be used to direct
when to change from one polarization to the next while plotting spectra.

Recognized polarization names are listed in the on-line help for
polarization. To see the list, type:

 help polarization

RELATED COMMANDS
----------------
specplot   -  Plot time-averaged visibility spectra.
specopt    -  Preset specplot display options.
specsmooth -  Preset the spectral resolution displayed by specplot.
specorder  -  Set the order in which spectra are to be displayed.
specbase   -  Select baselines to be displayed by specplot.
spectime   -  Select time ranges to be displayed by specplot.
specuvr    -  Select the UV radius ranges to be displayed by specplot.