address, annoref, annotation (block variant), annotation (phrase variant), m:annotation-xml, aside (block variant), aside (toc variant), block, caption, citation (block variant), citation (phrase variant), d, definition, emph, entry (bibliography variant), entry (glossary variant), entry (index variant), entry (toc variant), expansion, xforms:group, h, hd, hpart, item, xforms:label, ln, d:longdesc, meta, note (block variant), note (phrase variant), noteref, sel:otherwise, p, ssml:phoneme, ssml:prosody, quote (block variant), quote (phrase variant), its:rb, ref, xforms:repeat, its:rt, s, ssml:say-as (phrase variant), ssml:say-as (text variant), d:simplifiedLanguageDescription, span, ssml:sub, d:summary, td, term, th, d:tour and sel:when
This element must not contain text.
This element must contain the following children: xforms:label
http://www.w3.org/2002/xforms/