omar elgazzar wrote:So, how web page shows Arabic letters, although Arabic letters are not part of ASCII ?! the same thing with notepad, I save files in ASCII and it still shows the Arabic letters ..
You can't save arabic letters in files encoded using ASCII.
Browsers read characters using ASCII until they reach the charset attribute, after which point they will use the provided encoding, which possibly *can* interpret Arabic.
If you want to write Arabic letters to a text file, it needs to be in an encoding like UTF-8. The text editor then can only display them if you set it to interpret the bytes as UTF-8.