| ZVON > References > XHTML Reference |
| Intro / Search / ZVON |
| Strict XHTML |
|---|
| Attribute: | label |
| Parent: | optgroup [Go to standard] |
| Values: | a sequence of characters from the document character set which may include character entities |
| Parent: | option [Go to standard] |
| Values: | a sequence of characters from the document character set which may include character entities |