Hypertext is used in Windows help programs and CD encyclopedias to jump to related references elsewhere within the same document. Every Internet computer has an IP number and most computers also have one or more Domain Names that are plain language substitutes for the dotted quad. Once that occurs, the IRC will provide full video-conferencing. Even today, while limited for all practical purposes only to text, the IRC can be a valuable business conferencing tool, already providing adequate voice communication. Sending one e-mail message to the mailing list's list server sends mail to all other members of the group.
Users join a mailing list by subscribing.
Subscribers to a mailing list receive messages from all other members. Users have to unsubscribe from a mailing list to stop receiving messages forwarded from the group's members. It's similar to the way that mail, in countries around the world, is addressed in the same basic format so that postal workers know where to find the recipient's address, the sender's return address and the postage stamp. The basic programming language behind the Internet's e-mail functions. The basic programming foundation that carries computer messages around the globe via the Internet.