This is an example of a use of lists

Any information, any at all, can be expressed as a string of at least two symbols. In the US, we use the Roman alphabet, Arabic numerals, and various punctuation marks and symbols, which works pretty well for us. Sometimes, however, it helps to break these strings up and arrange them in some logical order to make it easy to see the relationships between them. For example:

We could have said, "Little boys are made of: snips, snails, and puppydog tails. Little girls are made of: sugar, spice, everything nice, artificial flavors and colors, monosodium glutamate, ascorbic acid, and one half of one percent benzoate of soda, added to retard spoilage" but I think the list gets the idea across better. So did the hypertext developers. They made it easy by incorporating the list element. There are three types: