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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
unit Unit1;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
{$mode objfpc}{$H+}
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
interface
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
uses
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, Math;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
type
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
{ TForm1 }
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
TForm1 = class(TForm)
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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private
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
{ private declarations }
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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public
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
{ public declarations }
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
end;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
const
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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sectors = 16;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
var
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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Form1: TForm1;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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px: integer = 0;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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py: integer = 0;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
implementation
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
{$R *.lfm}
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
procedure LinePolar(x1, y1, x2, y2: single);
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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var
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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sector: integer;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
a1, r1, a2, r2, cx ,cy: single;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
begin
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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cx := Form1.ClientWidth/2;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
cy := Form1.ClientHeight/2;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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x1 := x1 - cx;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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y1 := y1 - cy;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
x2 := x2 - cx;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
y2 := y2 - cy;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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a1 := arctan2(y1, x1);
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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r1 := sqrt(x1*x1 + y1*y1);
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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a2 := arctan2(y2, x2);
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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r2 := sqrt(x2*x2 + y2*y2);
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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for sector := 0 to sectors-1 do begin
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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x1 := r1 * cos(a1 + sector*2*pi/sectors) + cx;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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y1 := r1 * sin(a1 + sector*2*pi/sectors) + cy;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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x2 := r2 * cos(a2 + sector*2*pi/sectors) + cx;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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y2 := r2 * sin(a2 + sector*2*pi/sectors) + cy;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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Form1.Canvas.MoveTo(round(x1), round(y1));
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
Form1.Canvas.LineTo(round(x2), round(y2));
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
end;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
end;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
procedure TForm1.FormMouseMove(Sender: TObject; Shift: TShiftState; X,
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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Y: Integer);
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
begin
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
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canvas.pen.width := 3;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
if ssRight in Shift then Form1.Refresh;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
if ssLeft in Shift then LinePolar(px, py, x, y);
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
px := x;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
py := y;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
end;
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
end.
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![](https://seccdn.libravatar.org/avatar/2e5dd0bee1e7e619066117de357c8458fc7e847f4345b0cb8a7a5413aa2a45a0?d=retro&s=16) |
64a39c |
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