This is a standard set by the W3C organisation, by which web- browsers are able to share a common method of displaying Hypertext documents. The Internet is an international network of computer networks Initially a way for the US Government to communicate with different departments in the late 60's. Academic and research institutions went on and employed it for communicating research matters. This is the sytem that the computer runs on. It tells the computer's hardware what to do from commands given to it by the user, and other subsystems within the computer.
Email has it's own method of transferring data, it's own protocol.
The web also has it's own method of transferring data across the Internet, it's own protocol. This is a term given to the type of - Operating system your computer runs on. Plug-in A piece of software that is bundled with an application like Internet Explorer used to enable movies or animation. A server is the name given to a computer with a large enough memory capacity to store a number of websites. A server can also be used to ' host ' email applications such as APU's Artemis.