You can select all objects in a drawing that have the same object type, style, and layer as one or more preselected objects. If the objects selected are of different types, the selection is based on shared properties.
For example, you can select all walls in the drawing that use the CMU-Rigid style and are placed on the A-Walls layer.
All objects that match the type, style, and layer of the object are added to the selection set. You can now make changes to the selection set, for example on the Properties palette.