Is it possible to see The Edge Vent slot opening from inside the attic?

It will be difficult to see The Edge Vent slot cut unless a person is able to position himself very low inside the attic near the overhang area.

It will be difficult to see the slot cut unless a person is able to position himself very low inside the attic near the overhang area. Even then, the attic insulation baffles might obstruct the view of the slot. A trick that can be attempted is to have someone shine a light into the vent from outside into the dark attic. Someone inside the attic should be able to see the light but, again, the attic insulation baffle may obstruct the view of the light. Also, at night someone from inside the attic could light up the attic while someone from outside the attic could look for ambient light -- but the attic insulation baffles would make this difficult.