Byte-Order Mark found in UTF-8 File. The Unicode Byte-Order Mark (BOM) in UTF-8 encoded files is known to cause problems for some text editors and older browsers. You may want to consider avoiding its use until it is better supported.
XHTML驗證某網站時，出現了以上的"錯誤"，原來是Byte-Order Mark found in UTF-8 File這個問題。 即：在以utf-8編碼的文件出現有BOM標記
