Adobe® Flex® applications typically consist of multiple MXML and ActionScript files, and each MXML file is a separate MXML component. MXML components let you encapsulate functionality in a reusable component, extend an existing Flex component by adding new functionality to it, and reference the MXML component by using an MXML tag.

For information on advanced techniques for creating MXML components, see Advanced MXML Components.

• About MXML components
• Scoping in custom components
• Applying styles to your custom component