A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
X - Generated Text and Punctuation
XHMTL table modelsee Table Models (XHTML and OASIS CALS)
XLinkuse <ext-link>
xlink attributessee @xlink:actuatesee @xlink:hrefsee @xlink:rolesee @xlink:showsee @xlink:titlesee @xlink:type
XLink namespacesee Namespaces and MathML
xml:basesee JATS and Linked Data
XML document instance codesee <code>
XML ID/IDREFsee @id
xrefsee <ext-link>see <uri>