Start the program and go to the "File/New" menu item. Exit the "Common systems" dialog box using "No". You will then see the following dialog box:
Select the "Horizontal-plane system" button from the dialog box.
Start the program and go to the "File/New" menu item. Exit the "Common systems" dialog box using "No". You will then see the following dialog box:
Select the "Horizontal-plane system" button from the dialog box.