Add Objects to a Selection Set
Work with Selection Sets
Use Filter Lists to Define Selection Set Rules
You can limit selection sets by property or by object type using filter lists. For example, you can copy only the blue objects in a circuit board drawing, or only objects on a certain layer. You can also combine selection criteria in your filter list. For example, you can tell AutoCAD to include an object in a selection set only if it is a blue circle on a specific layer. Filter lists can be specified for the Select , SelectAtPoint , SelectByPolygon , and SelectOnScreen methods.
NoteFiltering
recognizes only linetypes explicitly assigned to objects, not those
inherited by the layer.