Meta-information
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Meta-information is information that defines information.
Meta-information turns up in many places, especially in computer data.
Some examples of files with meta-information are:
- MP3 files can contain ID v1 or ID v2 tags generally intended to contain information about a song, such as the title, artist, album, year, track number, genre, etc.
- Video files, such as MPEG and AVI can have similar tags.
- In HTML, the <meta> tag is used by search engines to index the page's topic.