Return all properties when reading an STC-S document? StcsProps
Other attributes such as StcsCoords and StcsArea can be used to specify other Objects
to be returned by astRead. If more than one of these attributes is set non-zero, then
the actual Object returned by astRead will be a KeyMap containing the requested
Objects. In this case, the properties KeyMap will be stored in the returned
KeyMap using the key " PROPS" . If StcsProps is the only attribute to be set
non-zero, then the Object returned by astRead will be the properties KeyMap
itself.
The KeyMap containing the properties will have entries for one or more of the following
keys: " TIME_PROPS" , " SPACE_PROPS" , " SPECTRAL_PROPS" and " REDSHIFT_PROPS" . Each
of these entries will be another KeyMap containing the properties of the corresponding
STC-S sub-phrase.