DBEXT

       Extract values of up to 12 items from an IDL database

       Procedure to extract values of up to 12 items from
       data base file, and place into IDL variables

       dbext,list,items,v1,[v2,v3,v4,v5,v6,v7,v8,v9,v10,v11,v12]

       list - list of entry numbers to be printed, vector or scalar
               If list = -1, then all entries will be extracted.
               list may be converted to a vector by DBEXT
       items - standard item list specification.  See DBPRINT for
               the 6 different ways that items may be specified.

       v1...v12 - the vectors of values for up to 12 items.

       Extract all RA and DEC values from the currently opened database, and
       place into the IDL vectors, IDLRA and IDLDEC.
               IDL> DBEXT,-1,'RA,DEC',idlra,idldec

       version 2  D. Lindler  NOV. 1987
       check for INDEXED items   W. Landsman   Feb. 1989
       Converted to IDL V5.0   W. Landsman   September 1997

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