As UTF-8 has become the most common text encoding, codice_2 (shown here as three hexadecimal values) is the most commonly occurring BOM form, also known as the "UTF-8 signature". HTML5 browsers are required to recognize the UTF-8 BOM and use it to detect the encoding of the page. Software may alternatively recognize UTF-8 encoding by looking for bytes with the high order bit set (values codice_3 through codice_4) followed by bytes that define valid UTF-8 sequences.