| {{Code|4.0}}
| <code>html-version=5.0</code>
|- valign="top"
| {{Code|item-separator}}
| Determines a string to be used as item separator. If a separator is specified, the default separation of atomic values with single whitespaces will be skipped.
| ''arbitrary strings'', {{Code|\n}}, {{Code|\r\n}}, {{Code|\r}}
| ''empty''
| <code>item-separator=&#a;</code>
|- valign="top"
| {{Code|encoding}}
|- valign="top"
| {{Code|separator}}
| Determines the string to be used as item separator(deprecated, replaced with {{Code|item-separator}}).
| {{Code|\n}}, {{Code|\r\n}}, {{Code|\r}}, ''arbitrary strings''
| ''single space''