Next: CATALOG /LINE
This option will open the specified source catalog as a second cata-
log, only accessible through the "/ALTERNATE" options of commands
SOURCE, HORIZON, and CONVERT. For instance, a catalog containing cali-
bration or pointing sources may be opened as an Alternate Source cata-
log, while the objects to study are kept in the Current catalog, en-
abling easy switching between the two kinds of objects.