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    Text functions
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    Topic complex Table functions
    Function markdoubles()
    Short Marks double entries with regard to an index
    Syntax MARKDOUBLES(db : INTEGER; index : INTEGER|STRING [,mode : INTEGER]) : INTEGER
    Parameter db : table handle from OpenDB
    index : index number or index name
    mode :
    0 (default) // w/o the first record
    1 // with the first record
    Return Number of the found records. Additional the dublicate enties are marked.
    See also:
    delmarkedrecords()
    Description Marks all records, that have a identical entries in the given index.
    When mode is set to 0 (the default), exactly n - 1 records will be marked. The very first record (let's say the master record) is not.
    For mode = 1, this record is set to marked also. So it is exatly n records that are marked.


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