Deleting a part from an application
To delete parts from applications: 
1.	In a Organizer, select the part or parts you want to delete. 
2.	From the Parts menu, select Delete. 
 
Sometimes a part cannot be deleted because instances of the part still exist. If this occurs, you can delete all the instances of a part by executing an expression like the following in the System Transcript window, substituting the name of the part you want to delete for MyPart: 
MyPart allInstances do:
   :each | each become: nil]
Last modified date: 05/14/2020