A week ago I installed the latest P3P firmware (batteries, bird, and controller) and now I have an icon on the left side of the screen, just above the 'Home' icon, which is a hand with a finger extended. I received no advice as to what it is or how to use it. I went back and read every line of the downloaded instruction manual and found nothing. When I click on it I can draw a free hand blue line on my Google map, but I have no idea what that means or how it is used. Before I take any chances trying to figure it out on my own I thought I'd post it. Anyone?