Asymmetric container tags
Donít appear in browser window
Do appear if user does a VIEW SOURCE from browser
Useful for copyright information & notes to other webmasters editing the same pages.
Donít include HTML tags in comments (ie, <!-- <B> -->) as it confuses some (most) browsers. Many browsers interpret the first > to mean end-comment, even though the spec says -->.
See SSI later (advanced class)