Tags are constructed of brackets between which the tag is placed. Tags are placed around segments of text, so there is usually a companion end tag which is identical to the start tag except it includes a forward slash. Here are start and end tags for a title:
<TITLE>Introduction to HTML</TITLE>
HTML also includes markup called character entities. These are used to include international characters as well as characters usually included in tags as markup. Entities start with an ampersand, followed by the entity name and end with a semicolon. Here is a character entity for an ampersand:
&