A selector is a way to associate XHTML content with style settings based on various information—most often its type, class, or ID. Sometimes the word "selector" is used interchangeably with the term "style," but a selector can be much more than just a simple style.
A simple style element type such as h1 can be used as a selector all by itself. See Creating Selectors.
Example Here is how an h1 selector could look in the Advanced view of the Stylesheet Editor after you define it.
And here is how it would look in the Internal Text Editor.
However, selectors can also be more advanced. See Advanced Selectors.
Example Here is an example of a selector that is much more complex.
