A line set groups multiple connected segments into a single editable object, allowing designers to manipulate contours

https://wiki-burner.win/index.php/Choosing_Copper_Line_Set_Insulation_for_Hot_and_Cold_Regions

A line set groups multiple connected segments into a single editable object, allowing designers to manipulate contours, outlines, and paths with consistent thickness, style, and snapping behavior across a project.