HTML - the standard markup language for creating web pages and web applications. With Cascading Style Sheets (CSS) and JavaScript it forms a triad of cornerstone technologies for the World Wide Web.

JavaScript is a high-level, dynamic, untyped, and interpreted run-time language. It has been standardized in the ECMAScript language specification.

Cascading Style Sheets (CSS) is a style sheet language used for describing the presentation of a document written in a markup language.

The World Wide Web (abbreviated WWW or the Web) is an information space where documents and other web resources are identified by Uniform Resource Locators (URLs).

Hypertext is text displayed on a computer display or other electronic devices with references (hyperlinks) to other text that the reader can immediately access, or where text can be revealed progressively at multiple levels of detail (also called StretchText).