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The row number stored in the model index is used to reference an merchandise in the listing of contacts. Selection is dealt with by the QItemSelectionModel, which will be explained with AddressWidget. TableModel is a subclass of QAbstractTableModel that provides the usual model/view API to access data. Instead, QTableView is used to supply 9 different views of the identical information, based on the alphabet groups. The rowCount() and columnCount() capabilities return the scale of the model. The tackle guide example reveals tips on how to use proxy fashions to d