 Case aMsgTbl(nEntry)                         'Select on the
       message number stored in this table entry
      Case -1                                             'This msg table slot
       is a deleted entry
        aMsgTbl(nEntry) = uMsg                            'Re-use this entry
        Exit Sub                                          'Bail
      Case uMsg                                           'The msg is already
       in the table!
        Exit Sub                                         