The .htaccess file is the default directory-level configuration file on Apache servers. They are also known as “distributed configuration files.” Configuration directives contained in the .htaccess file apply to the directory in which the file is placed as well as all of its subdirectories. Within the .htaccess file things like authorization and authentication, rewriting of URLs, cache control and customized error responses can all be specified.

Stands for Hypertext Markup Language. It’s the primary language used to write web pages. HTML is primarily intended as a way to provide content on websites (with CSS handling the layout and stylistic options), though it can also be used to determine how that content is displayed.

A hyperlink is a link from one web page to another, either on the same site or another one. Generally these are text or images, and are highlighted in some way (text is often underlined or put in a different color or font weight). The inclusion of hyperlinks are the “hyper” part of “hypertext.”

Hypertext is any computer-based text that includes hyperlinks. Hypertext can also include presentation devices like tables or images, in addition to plain text and links.