The same character converted to <answer>UTF-8</answer> becomes the byte sequence EF BB BF. The Unicode Standard allows that the BOM "can serve as signature for <answer>UTF-8</answer> encoded text where the character set is unmarked". Some software developers have adopted it for other encodings, including <answer>UTF-8</answer>, in an attempt to distinguish <answer>UTF-8</answer> from local 8-bit code pages. However RFC 3629, the <answer>UTF-8</answer> standard, recommends that byte order marks be forbidden in protocols using <answer>UTF-8</answer>, but discusses the cases where this may not be possible. In addition, the large restriction on possible patterns in <answer>UTF-8</answer> (for instance there cannot be any lone bytes with the high bit set) means that it should be possible to distinguish <answer>UTF-8</answer> from other character encodings without relying on the BOM.
Byte order marks are forbidden in protocols using what standard? 
UTF-8