freepascal.compiler/docs/crtex/ex10.pp

Program Example10;
uses Crt;

{ Program to demonstrate the InsLine function. }

begin
  ClrScr;
  WriteLn;
  WriteLn('Line 1');
  WriteLn('Line 3');
  WriteLn;
  WriteLn('Oops, forgot Line 2, let''s insert at the cursor postion');
  GotoXY(1,3);
  ReadKey;
  InsLine;
  Write('Line 2');
  GotoXY(1,10);
end.