The set-of-comma-separated-tokens value for SVG specifies a string containing zero or more tokens each separated from the next by a single U+002C COMMA character (,), where tokens consist of any string of zero or more characters, neither beginning nor ending with ASCII whitespace, nor containing any U+002C COMMA characters (,), and optionally surrounded by ASCII whitespace.

<set-of-comma-separated-tokens>

• World Wide Web Consortium (W3C)