# unicode-bom Require or disallow the Unicode Byte Order Mark. ## Options `string`: `"always"|"never"` ### `"always"` The following pattern is considered a violation: ```css a {} ``` The following pattern is _not_ considered a violation: ```css U+FEFF a {} ``` ### `"never"` The following pattern is considered a violation: ```css U+FEFF a {} ``` The following pattern is _not_ considered a violation: ```css a {} ```