DBPUT

       Procedure to place a new value for a specified item into
       a data base file entry.

       dbput, item, val, entry

       item - item name or number
       val - item value(s)

       entry - entry (byte array) or scalar entry number.
               if entry is a scalar entry number then the data
               base file will be updated.  Otherwise the change
               will be only made to the entry array which must
               be written latter using DBWRT.

       If entry is a scalar entry number or the input file name
       is supplied, the entry in the data base will be updated
       instead of a supplied entry variable.  In this case, !priv
       must be greater than 1.

       IDL> dbput,'WAVELEN',1215.6,entry

       DB_ITEM, DBRD, DBXPUT, DBWRT

       version 2  D. Lindler  Feb 1988 (new db formats)
       modified to convert blanks into zeros correctly D. Neill Jan 1991
       Converted to IDL V5.0   W. Landsman   September 1997
       V5.2 version support unsigned, 64bit integers W. Landsman  Sep. 2001

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