You can create a feature line by converting existing 2D or 3D polylines, lines, or arcs. You can select objects in the current drawing or from an Xref.
Names can be assigned to feature lines. Any command that prompts to select a feature line includes an option to select by name from a list. The name is optional so that you can just name the significant feature lines in your drawing.
You can specify the CreateFeatureLines command settings prior to creating feature lines.
Settings control which layer the lines are placed on and whether the original objects are deleted.