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test_one_element.geo
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			// Gmsh project created on Fri Dec 28 23:39:32 2018
			Point(1) = {-0.5, -0.5, 0, 100.0};
			Point(2) = {0.5, -0.5, 0, 100.0};
			Point(3) = {0.5, 0.5, 0, 100.0};
			Point(4) = {-0.5, 0.5, 0, 100.0};

			Line(1) = {1, 2};
			Line(2) = {2, 3};
			Line(3) = {3, 4};
			Line(4) = {4, 1};

			Line Loop(1) = {3, 4, 1, 2};

			Plane Surface(1) = {1};
			Physical Surface("plate") = {1};

			Recombine Surface{1};