Assigns filter criteria based on line numbers that the software applies globally for all output reports. If the model has assigned line numbers, you can set up filter criteria based on those numbers to look at output results for only certain parts of the model.
For example, apply line number ranges for the software to filter reports to only include elements that belong to a line number. For example, if you filter based upon line numbers, then for any report you generate in the Output Processor, the software filters and shows only the data that includes information on systems with the specified line numbers. When the software shows the Line Number box as Unassigned, it means the model did not have any line numbers assigned and cannot be filtered based on that information.
For more information on filtering output reports, see Filters Dialog Box and Filter Reports.