[Gmsh] need help with structured mesh in gmsh

[Владислав Балашов]

Hello!
I need to build structured mesh in folowing domain (my geo-file):


Point(1) = {0, 0, 0, 1.0};
Point(2) = {0, 1, 0, 1.0};
Point(3) = {2, 1, 0, 1.0};
Point(4) = {2, 0, 0, 1.0};
Point(5) = {0, 0.25, 0, 1.0};
Point(6) = {0, 0.75, 0, 1.0};
Point(7) = {0.25, 1, 0, 1.0};
Delete {
  Point{5};
}
Line(1) = {7, 3};
Line(2) = {3, 4};
Line(3) = {4, 1};
Line(4) = {1, 6};
Circle(5) = {6, 2, 7};
Line Loop(6) = {1, 2, 3, 4, 5};
Plane Surface(7) = {6};


but i can't find any manuals how to do it. Can you help me, please?
Thank you very much!
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