The 
                  sup element represents instances of superscripted text.
                  
               
The 
                  sup element represents instances of superscripted text.
                  
               
<p>
    After a thousand generations, species (A) is supposed 
    to have produced two fairly well-marked varieties, namely 
    a<sup>1</sup> and m<sup>1</sup>.
</p>
    abbr, d:about, 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), code, d, definition, description (block variant), description (phrase variant), description (text variant), emph (phrase variant), emph (text variant), entry (toc variant), entry (index variant), entry (bibliography variant), entry (glossary variant), expansion, h, hd, hpart, item, ln (code variant), ln (ln variant), lnum, d:longdesc, meta, name, note (block variant), note (phrase variant), noteref, num, object (block variant), object (phrase variant), object (text variant), sel:otherwise, p, ssml:phoneme (phrase variant), ssml:phoneme (text variant), ssml:prosody (phrase variant), ssml:prosody (text variant), quote (block variant), quote (phrase variant), its:rb, ref, its:rt, s, ssml:say-as (phrase variant), ssml:say-as (text variant), d:simplifiedLanguageDescription, span (phrase variant), span (text variant), spine, sub, ssml:sub (phrase variant), ssml:sub (text variant), d:summary, sup, td, term, th, time, ssml:token (phrase variant), ssml:token (text variant), d:tour, w, sel:when and wpart
This element may contain text.
This element may contain the following children: ssml:break, char, emph, object, pagebreak, ssml:phoneme, ssml:prosody, its:ruby, ssml:say-as, span, sub, ssml:sub, sup and ssml:token
sup element must neither be empty nor contain only whitespace.
                        
                     http://www.daisy.org/ns/z3998/authoring/