In order for all web pages to work around the world and through all different computers and browsers, they need to all speak the same language. They also need to use a standard and basic set of characters. The programming language that is used for all Internet communications is HTML.
History
The Internet was started as a way to allow computers to communicate across long distances using a simple and easy method and only used plain text.
Definition
The letters HTML actually stand for the words "HyperText Markup Language."
Identification
HTML pages, files and documents are simply plain text, no special encoding, that include a number of different types of tags.
HTML Tags
The actual tags used in HTML are different command words surrounded by the greater than and less than symbols.
Benefits
Since HTML is standard, it is easy for people and computers to use, and it was set up so that unidentified tags do not generate errors, making it easy for the language to be used far into the future.