Padding is a CSS property, which allows spacing between elements for layout purposes.

Page properties are fragments of information that are linked with an object in the database.

Within a hierarchical structure, a parent is an immediate ancestor node of a node.

A Portable Document Format (PDF) is an Adobe Acrobat file type that integrates a complete description of a fixed two-dimensional document layout.

A permission is a rule that can restrict or limit access to certain assets.

An Open Source general purpose scripting language suited for web development and can be embedded into HTML.

Post Office Protocol version 3 (POP3) is an application-layer Internet standard client/server protocol used by e-mail clients to retrieve e-mails from a remote server over a TCP/IP connection, by which e-mails are received and held for the user by an Internet server. It is built into most popular e-mail products, such Outlook Express, and browsers, such as Internet Explorer and Netscape.

A web portal displays integrated information from a variety of sources and multiple applications. Web portals offer a range of services, such as: web searches, e-mail, news, stock prices, and entertainment.

A protocol is a set of rules that describes how to transmit data, especially across a network. Examples are FTP and HTTP.