# `<var>`

The `<var>` element defines a variable within a syntax diagram for which the user must supply content, such as their user name or password. Processors typically represent the `<var>` element in output in an italic font, but are not required to do so. This element is part of the DITA programming domain, a special set of DITA elements designed to document programming tasks, concepts, and reference information.

Category: Programming elements