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Drop-down list Material data sets: The entries in this drop-down list allow you to filter the available data sets by material category, e.g. pipe data duct network, radiant heating/cooling data set, etc.
Manufacturer: Lists all manufacturers for whom material data sets are installed on your system. If you select a manufacturer, the data sets installed for the manufacturer are displayed in the area to the right of the manufacturer list. The installation path is displayed below.