Controls Ext1 and Ext2 outputs via sub-menu.
Selected Ext1 output pin can be activated or deactivated. When output is active, there is check next to ExtOut1 pin menu item. Active output pin will also be indicated under IO tab on the main screen.
Selected Ext2 output pin can be activated or deactivated. When output is active, there is check next to ExtOut2 pin menu item. Active output pin will also be indicated under IO tab on the main screen.