| <p>An <abbr title="Abbreviation">ABBR</abbr>: "<abbr title="Reference">REF</abbr>". | |
| ref and REFERENCE should be ignored.</p> | |
| <p>The <abbr title="Hyper Text Markup Language">HTML</abbr> specification | |
| is maintained by the <abbr title="World Wide Web Consortium">W3C</abbr>.</p> |