In the broadest sense, Help is information online - groups of related topics connected by electronic links (hypertext links) accessed using a computer.
In many ways, it is information-at-your-fingertips. Rather than searching for a long-forgotten book on a dusty bookshelf, Help makes information accessible from the primary home and office tool used worldwide - the computer. It's a powerful, flexible way to communicate and publish information electronically.
Help users (the people who read the online information) interact with the documents. They are in control because they can quickly and easily move around at will through the electronic hypertext links from subject to subject. They also have a lot of different ways to find the information they're looking for - they can read, learn, browse, or get an answer and get back to work.