w3c/webvtt — pull request #43 by silviapfeiffer (2014-02-14 07:02:56+00:00)
Title: Use a more explicit CSS selector example.

Since WebVTT is based on SRT and SRT has numbers as identifiers for
cues, the selection of cues by number is a common use case and worth an
example.

Closes https://www.w3.org/Bugs/Public/show_bug.cgi?id=19632