Returns the extra information that was set for the given
argument in the wizlist.
If the argument is an object, then the data set in the creator
entry for this object is returned.
If the argument is a string, it is the name of the entry to be
queried, e.g. a uid.
If the argument is a number (should be 0 then), the data set
in the default wizlist entry is returned. It can be used to
store data for the lifetime of this driver run, like the time
of the last reboot.
The function causes a privilege violation.