Here one selects which baseline of a spectrometer shall be used.
Note that this baseline selection is not needed for 3-way combination, since
the three NPOI baseline E-W, C-W, and C-E are in spectrometers 1, 2, and 3,
respectively.
The baseline selection is only used if the directive
is set to "Selected". Important: after entering a selection,
do not forget to hit <return>!
There is a simple parser reading the input selection. The following examples
should explain how it works.
- 1-20: parsed into 1,2,3,4,5,6,7,8,9,...,20
- 1-10,12,15-20: parsed into 1,2,3,4,5,6,7,8,9,10,12,15,16,...,20