View source for Antenna/Baseline Selection Syntax with or without Autocorrelations

The antenna selection string is a semi-colon (’;’) separated list of baseline specifications. A
baseline specification is of the form:
* ’ANT1’ — Select all baselines including the antenna(s) specified by the selector ANT1.
* ’ANT1&’ — Select only baselines between the antennas specified by the selector ANT1.
* ’ANT1&ANT2’ — Select only the cross-correlation baselines between the antennas specified by
selector ANT1 and antennas specified by selector ANT2. Thus ’ANT1&’ is an abbreviation for
’ANT1&ANT1’.
* ’ANT1&&ANT2’ — Select only auto-correlation and cross-correlation baselines between antennas
specified by the selectors ANT1 and ANT2. Note that this is what the default antenna=’’
gives you.
* ’ANT1&&&’ — Select only autocorrelations specified by the selector ANT1.