Fundamentals > Creo Parametric User Interface > The File Menu > Deleting Files > To Erase Undisplayed Objects from Memory
  
To Erase Undisplayed Objects from Memory
Use the Erase Not Displayed dialog box to erase all objects from the current session, except for objects that are currently displayed and any objects referenced by the displayed objects. For example, if an assembly instance is displayed, the generic of an instance and its components are not erased.
1. Click File > Manage Session > Erase Not Displayed. The Erase Not Displayed dialog box opens.
2. Click OK. If you have set the configuration option prompt_on_erase_not_disp to yes , you are prompted to save each object before it is erased.
 
Click Tools > Customize Screen to add the following to the toolbar:
—Erase Current
—Erase Not Displayed
Set the configuration file option prompt_on_erase_not_disp to yes to display a prompt for each modified, unsaved object, allowing you to save the object before it is erased. When set to no (the default), Creo Parametric immediately erases all undisplayed objects.