1An ABBR: "REF".
2ref and REFERENCE should be ignored.
3
4*[REF]: Reference
5*[ABBR]: This gets overriden by the next one.
6*[ABBR]: Abbreviation
7
8The HTML specification
9is maintained by the W3C.
10
11*[HTML]: Hyper Text Markup Language
12*[W3C]: World Wide Web Consortium
13
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