html

Fundamentally speaking, it is a text file that can be signed or without a signature. The signature means that 3 signature bytes are hidden in the header of the text file to mark it. The following text is in what encoding. Some editors, by default, do not auto-sign. This results in unsigned files that, when interpreted by different text readers (or browsers), do not recognize the correct encoding (most likely The classic case is that when typing the word "China Unicom" in

notepad.exe

, closing notepad.exe and then opening it again) even the text content is not recognized correctly, charset

Of course it will be useless once set