What is HTML?
HTML is a language for programming web pages.
1. HTML stands for Hyper Text Markup Language.
2. HTML is not a programming language, it is a markup language.
3. A markup language is a set of markup tags.
4. HTML uses markup tags to describe web pages.
There are four official levels, or versions of HTML conformance. Each encompasses a set of tags and higher levels include tags from all those below it.
Level 0. The minimum tags which constitute an HTML document (most tags currently in use). Level 0 tags are usually rendered consistently form browser to browser.
Level 1 Level 0 tags plustags for highlighting(also caleed logical tags)and images.
Level 2 Level 0 and level 1 tags plus form tags.
Level 3 Previous levels plus support for clint-side image maps and scripts, and table markup elements.