- W3C
- Standards-setting body for the web
- Element
- A part of an HTML document, such as BODY, P, STRONG, or SPAN
- Attribute
- A quality of an element -- often optional, but sometimes
required -- such as ALT, SRC, LONGDESC, or TITLE
- Tag
- The actual symbols indicating the start (and usually, end)
of an element, including the attributes of that element