DBVAL

       procedure to extract value(s) of the specified item from
       a data base file entry.

       result = dbval( entry, item )

       entry - byte array containing the entry, or a scalar entry number
       item - name (string) or number (integer) of the item

       the value(s) will be returned as the function value

       Extract a flux vector from entry 28 of the database FARUV
       ==> flux = dbval(28,'FLUX')

   version 2  D. Lindler Nov, 1987     (new db format)
       Converted to IDL V5.0   W. Landsman   September 1997

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