The linetypes library contains a list of pre-defined linetypes that you can apply to line styles. You can add or edit linetypes to suit your needs.
You can access the Linetypes library while adding or editing a line style, or through the Libraries menu in the Catalog Manager.
To access the linetypes library while editing a line style:
In the Edit
Line Styles dialog, click the Browse button next to the Linetype
drop box.
Note: If you are editing a line style in your drawing, it will be saved in the current drawing only. If you are editing a line style in the catalog, it will be saved in the catalog only.
To access the linetypes library from the Catalog Manager:
Select File > Catalogs > Catalog Manager, or right-click an element in the catalog panel and select Catalog Manager.
In the Catalog Manager, select Libraries > Linetypes.