program Hello; uses crt; type str = string[1];  arr = array[1..20, 1..60] of char; var x, y:integer;  carr:arr;  c:char; Procedure start; {comment here} begin write (' Press enter to begin. '); readln; end; Function Valid (var choice:char): boolean; begin   valid:= false;  case choice of   '1':valid:= true;  '2': valid:= true;  '3': valid:= true;  '4': valid:= true;  '5': valid:= true;  '6': valid:= true;  end; end; begin  for y:=1 to 3 do  begin  writeln (y);  end;    repeat  writeln(y);  y := y + 1;  until y > 5;  writeln ('Hello World'); end.