four-direction blue arrow

Hi,

do you guys know what that blue arrow is? I get it when I am dimensioning a sketch. It doesn't show up all the time but I don't know what the trigger is for it to show up. It may be for angle relations and it may be something helpful but it has been a nuisance for me because when active, I can't do my dimensions before I click a few times to remove it.

SolidworksSurfacing