The Layer Properties Manager lets you view and manage the layers in the current drawing.
Use the Layer Manager to access and manage the components that support layering, such as layer standards, layer key styles, layer keys, and layer key overrides.
In the Layer Properties Manager, all the layers in the current drawing are displayed in the All layer group. If you link any referenced drawings (xrefs) to the drawing, the layers are listed in an Xref layer group.