t" or "number") determines whether collating is based
on alphabetic sequence or numeric sequence.</p>

<p>The <b>case-order</b> attribute (values "upper-first" and "lower-first") is relevant only for
data-type="text"; it determines whether uppercase letters are sorted before their lowercase equivalents,
or vice-versa.</p>

<p>The value of the <b>lang</b> attribute can be an ISO language code such as "en" (English) or
 "de" (German). It determines the algorithm used for alphabetic collating. The defa