DBCOMPRESS

       Compress a .dbf database file after a call to DBDELETE

       The procedure DBDELETE will remove specified entries from a database
       but it will not free the unused space.     DBCOMPRESS will compress
       the .dbf file so that it only contains valid entries.

       DBCOMPRESS, dbname

       dbname - Name of the database to be compressed, scalar string

       (1) Will not compress the index (.dbx) file.   The size of the .dbx file
       is controlled by the MaxEntries value in the database definition
       (.dbd) file
       (2) The updated .dbf file is written in the current directory.
       This may need to be moved into the ZDBASE directory.

       DBOPEN, DB_INFO(), FIND_WITH_DEF()

       Written, W. Landsman      Raytheon STX        May 1998
       Converted to IDL V5.0 June 1998

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