困扰很久的问题 类中定义的放保护字里面和外面的函数有什么区别？
unit dq;

interface

uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, DB, ADODB, Grids, DBGrids, ExtCtrls, ztvregister,
ztvBase, ztvZip, Buttons, ComCtrls,iniFiles,StrUtils;

type
Tbillcode=array of string[2];

Tdqfrm = class(TForm)
ADOQuery1: TADOQuery;
Zip1: TZip;
ProgressBar1: TProgressBar;
ADOCommand1: TADOCommand;
BitBtn1: TBitBtn;
Button2: TBitBtn;
CheckBox1: TCheckBox;
procedure FormShow(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure BitBtn1Click(Sender: TObject);
procedure savetofile(s:string;name:string);
private

{ Private declarations }
public
procedure savetofile(s:string;name:string);
{ Public declarations }
end;

请问procedure savetofile(s:string;name:string);这个过程放在保护字里面和放在保护字前面有什么区别？比如放在private上面和放在 public里面有什么区别？

[解决办法]
在本单元里没有什么区别,但在别的单元里有有区别了
private下面的是不可见的