Magnolia 4.5 reached end of life on June 30, 2016. This branch is no longer supported, see End-of-life policy.
A component is the smallest block of content that editors can edit, delete and move as a single unit on the page. At its simplest a component may be just text. However, a component can contain almost anything: a related image, a list of links or a teaser to another page. In the STK, Magnolia provides ready-made components for common use cases such as entering and promoting content and registering users.
Other components are supplied by specific modules.
Note that same or similar components can be found in both the STK and specific modules, such as the Public User Registration module.
This is a complete reference of Standard Templating Kit components and key components provided by other modules.