message: Adjusting comments and user options in periodic annulus geo file
diff: @@ -3,7 +3,7 @@ SetFactory("OpenCASCADE");
  // Select periodic mesh by setting this to either 0 - standard, 1 - periodic
  periodic = 0;
  -// Set the geometry order (1, 2, or 3)
  +// Set the geometry order (1, 2, ..., 9)
  order = 3;
  // Set the element type (3 - triangles, 4 - quadrilaterals)
  @@ -25,11 +25,14 @@ nazm2 = 5;
  R1 = 1.0;
  R2 = 2.0;
  +// Angular size of the sector
  +Phi = Pi/3.0;
  +
  Point(1) = {0.0, 0, 0, 1.0};
  Point(2) = {R1, 0, 0, 1.0};
  Point(3) = {R2, 0, 0, 1.0};
  -Point(4) = {R1*Cos(Pi/3), R1*Sin(Pi/3), 0, 1.0};
  -Point(5) = {R2*Cos(Pi/3), R2*Sin(Pi/3), 0, 1.0};
  +Point(4) = {R1*Cos(Phi), R1*Sin(Phi), 0, 1.0};
  +Point(5) = {R2*Cos(Phi), R2*Sin(Phi), 0, 1.0};
  Line(1) = {2, 3};
  Line(2) = {4, 5};
  Circle(3) = {2, 1, 4};
  @@ -52,7 +55,7 @@ EndIf
  // Set a rotation periodicity constraint:
  If (periodic)
  - Periodic Line{1} = {2} Rotate{{0,0,1}, {0,0,0}, -Pi/3};
  + Periodic Line{1} = {2} Rotate{{0,0,1}, {0,0,0}, -Phi};
  EndIf
  // Tag surfaces and volumes with positive integers
  