The Activate Masking tool allows you to turn feature masking on and off while working in ArcMap. Turning off masking can increase draw speed significantly.
- Start ArcMap.
- On the main menu, click Customize > Toolbars > Aviation Editing.
- Click the Activate Masking button on the Aviation Editing toolbar.
Masking is activated.
- Click the Activate Masking button again to turn masking off.