Point(1) = {0, 0, 0, 1};
Point(2) = {10, 0, 0, 1};
Point(3) = {10, 10, 0, 1};
Point(4) = {0, 10, 0, 1};
Point(5) = {3, 3, 0, 0.15};
Point(6) = {7, 6.5, 0, 0.15};
Line (1) = {1, 2};
Line (2) = {2, 3};
Line (3) = {3, 4};
Line (4) = {4, 1};
Line (5) = {5, 6};
Line Loop (1001001) = {1, 2, 3, 4, -5, +5};
Plane Surface (10) = {1001001};

