Remove unused items and definitions, including zero-length geometry and empty text objects. 
- Do one of the following: 
	 
- On the toolbar, click 
		  
. 
		 
- At the Command prompt, enter PURGE. 
		
 
 
   
- On the Purge dialog, select the items to purge: 
	 
- Click Show Details to display the list of named items that can be purged. 
		
 
-  Select a category to purge all items within that category. 
		
 
- Click the arrow to display a list of the individual items in that category. 
		
 
- Once you expand a category, select or clear individual items. 
		
 
 
   
- Select Nested Items to remove all unused named objects that are contained within or referenced by other unused named objects. 
  
 
- Select Orphaned Data to purge DGN linetypes. 
  
 
- Select Unsupported Objects to purge custom objects or data not supported by AutoCAD for Mac. 
  
 
- Click Purge. 
  
 
- If Unsupported Objects is selected, the Unsupported Objects dialog box displays. Review and select the specific unsupported objects you want to purge.