<rb>

<rb> (ruby base) contains the base text annotated by a ruby gloss. [3.4.2 Ruby Annotations]
Module core — Elements Available in All TEI Documents
Attributes
Contained by
core: ruby
May contain
analysis: c cl interp interpGrp m pc phr s span spanGrp w
certainty: certainty precision respons
core: abbr add address binaryObject cb choice cit corr date del distinct ellipsis email emph expan foreign gap gb gloss graphic hi index lb measure measureGrp media mentioned milestone name note noteGrp num orig pb ptr q quote ref reg rs ruby said sic soCalled term time title unclear unit
dictionaries: lang oRef pRef
figures: figure formula notatedMusic
gaiji: g
header: idno
iso-fs: fLib fs fvLib
linking: alt altGrp anchor join joinGrp link linkGrp seg timeline
msdescription: catchwords depth dim dimensions height heraldry locus locusGrp material objectType origDate origPlace secFol signatures stamp watermark width
namesdates: addName affiliation bloc climate country district eventName forename genName geo geogFeat geogName location nameLink objectName offset orgName persName persPronouns placeName population region roleName settlement state surname terrain trait
spoken: incident kinesic pause shift vocal writing
tagdocs: att code gi ident listRef specDesc specList tag val
textcrit: app witDetail
textstructure: floatingText
transcr: addSpan am damage damageSpan delSpan ex fw handShift listTranspose metamark mod redo restore retrace secl space subst substJoin supplied surplus undo
verse: caesura rhyme
character data
Example

The word 你 好 nǐ hǎo (hello) is glossed in pinyin to provide a pronunciation guide.

<p xml:lang="zh">
<!--...-->
 <ruby>
  <rb>你</rb>
  <rt place="above">nǐ</rt>
 </ruby>
 <ruby>
  <rb>好</rb>
  <rt place="above">hǎo</rt>
 </ruby>
<!--...-->
</p>
Content model 
<content>
 <macroRef key="macro.phraseSeq"/>
</content>
Schema Declaration 
<rng:element name="rb">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.global.rendition.attributes"/>
 <rng:ref name="att.global.linking.attributes"/>
 <rng:ref name="att.global.analytic.attributes"/>
 <rng:ref name="att.global.facs.attributes"/>
 <rng:ref name="att.global.change.attributes"/>
 <rng:ref name="att.global.responsibility.attributes"/>
 <rng:ref name="att.global.source.attributes"/>
 <rng:ref name="att.typed.attributes"/>
 <rng:ref name="macro.phraseSeq"/>
</rng:element>
element rb
{
   att.global.attributes,
   att.global.rendition.attributes,
   att.global.linking.attributes,
   att.global.analytic.attributes,
   att.global.facs.attributes,
   att.global.change.attributes,
   att.global.responsibility.attributes,
   att.global.source.attributes,
   att.typed.attributes,
   macro.phraseSeq
}