VERSION
VERSION is the release number (tag) of the desitarget code version
on GitHub in the format X.Y.Z.
Under each VERSION, data are grouped according to
the observational conditions (or “layer”) in which they will be observed,
typically “dark” or bright”.
The VERSION directory also includes a subdirectory named
priminfo-{DR}-{VERSION} that stores matches between secondary
targets and DESI primary targets. Here, DR is the Legacy Surveys
data release used to select the primary targets.
Subdirectories: