Locks

Wait Locks:

        +100 Single record wait lock
        +300 Multiple record wait lock

        If another process (or node) has the record locked or a transaction
        pending, Btrieve will suspend the callers process (thread) until
        the record is available.


NoWait Locks:

        +200 Single record wait lock
        +400 Multiple record wait lock

        If another process (or node) has the record locked or a transaction
        pending, Btrieve will return error BT_ER_REC_IN_USE (84)
        or BT_ER_FILE_IN_USE (85).