Auto Punch
Auto Punch allows you to begin and end the automation pass at defined positions.
Activate Preview mode and set the left and right locators at the positions where you want to automatically punch in and out.
Auto Punch allows you to set up a safe zone for previously written automation data.
Place the right locator at the beginning of an area that you want to protect and enable cycle mode.
This ensures that a running automation pass always punches out before reaching this section of your project.