amount of data the command interpreter gathers about the File Server.
Data is returned in a predefined data structure.
-There are three acceptable values:
+There are four acceptable values:
=over 4
Server (for example, minimum, maximum, and cumulative statistics regarding
File Server RPCs, how long they take to complete, and how many succeed).
+=item 3
+
+Reports File Server callback processing statistics since the File Server
+started, including the number of call of callbacks added (AddCallBack), the
+number of callbacks broken (BreakCallBacks), and the number of callback
+space reclaims (GetSomeSpaces).
+
=back
=item B<-onceonly>