The status of a particular family of view
subtrees within the particular SNMP party's MIB
view. The value 'included(1)' indicates that the
corresponding instances of viewSubtree and
viewMask define a family of view subtrees included
in the MIB view. The value 'excluded(2)'
indicates that the corresponding instances of
viewSubtree and viewMask define a family of view
subtrees excluded from the MIB view.
Setting an instance of this object to the value
'invalid(3)' has the effect of invalidating the
presence or absence of the corresponding family of
view subtrees in the corresponding SNMP party's
MIB view.
It is an implementation-specific matter as to
whether the agent removes an invalidated entry
from the table. Accordingly, management stations
must be prepared to receive from agents tabular
information corresponding to entries not currently
in use. Proper interpretation of such entries
requires examination of the relevant viewStatus
object.