FILTERSIMILAR lets you filter a selection set based on your initial selection and the Settings on the Dialog Box.
You will be prompted for initial selection or choose Settings to open the dialog box; Add new filtered objects to previous filtered selection; Clear, Retrieve, or Delete a previous filtered selection.
On the Dialog Box Settings:
1) You can filter similar objects in any combination of the following:
Object, Layer, Color, Linetype, Linetype Scale, Lineweight, Object Style, Name, and Annotative Scale.
2) Additional Filter - Rotation, Linear Measurement, Area, or Volume.
3) Filter Objects in either Current Space, All Layouts, Entire Drawing, Selection on Screen.