
                            IAS CHANGES TO BRU


Here is a summary of the changes to BRU in this submission.

     1.  The disk can be mounted normally - device control  functions  need
         not  be specified.  Backup and restore operations can be performed
         with the disk online.  Files open for  non-shared  write  will  be
         ignored in a backup operation.

     2.  Different UIC's can  be  specified  between  tape  and  disk,  for
         example:

              BRU/REWIND/BACKUP:XYZ MM0:[*,50] DR2:[100,100]

         will put all tape files in the backup set XYZ with an  ending  UIC
         number of 50 on DR2:[100,100].

         NOTE:  If a UIC is specified on the output device only,  BRU  will
         look only for that UIC on the input device, e.g.,

              BRU/REWIND MM0: DR1:[200,200]

         will only look for [200,200] files on the tape.

     3.  The directory (DIR) and display (DIS) options can output to a file
         directly  by following the DIR/DIS switch with :filename.  If only
         the colon (:) is  specified,  the  default  filename  is  BRU.DSP.
         Output  to  a  file  will  also  contain  the creation date of the
         file(s).

     4.  The initialization option (INIT  switch)  has  been  removed.   If
         restoring  an  entire disk, it should be separately initialized by
         INI prior to running BRU.  This change removes the risk of a  user
         restoring  a  single  file  or two from inadvertently wiping out a
         disk.  It also allows backup/restore operations for virtual  disks
         (DV) or any other disk with a name not in the DEC dictionary.

     5.  Files returned to disk will retain their  original  creation  date
         and time, but the revision date and time will be when the file was
         returned to disk.

