In vector illustration, a line set manages stroke properties across multiple paths, linking width profiles, brushes

http://janequotes.byz.org/index.php?title=HVAC_Line_Set_Planning_for_Single-Zone_vs_Multi-Zone_Systems

In vector illustration, a line set manages stroke properties across multiple paths, linking width profiles, brushes, caps, and joins so global adjustments propagate cleanly without redrawing individual elements.