Idempotent attribute is not first

The idempotent attribute (object with @base="ξ" and @name="xi🌵") must be declared first in the formation.

Incorrect:

<o name="foo">
  <o base="∅" name="x"/>
  <o base="ξ" name="xi🌵"/>
</o>

Correct:

<o name="foo">
  <o base="ξ" name="xi🌵"/>
  <o base="∅" name="x"/>
</o>

Published on Fri Sep 12 07:13:56 UTC 2025.