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Select via the tabs whether you want to enter a pipe run, storey, or room designation.
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Click New....
The editing field is opened.

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Enter a new name and confirm with Enter.
The position is shown in the preview.
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If necessary, repeat the steps 1 to 3, in order to create more names.
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Mark a name in the selection window and click Assign <.
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Select one or more pipe sections, which belong to the selected pipe run, storey or room and confirm with Enter.

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Repeat the steps 5 to 6, in order to assign further names.
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Close the dialog with OK.
The names are assigned to the pipe sections and will be displayed in the calculation dialog and in the printouts.