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The extension guides now have a dedicated Extensions tab beside Media OS. Start with a working Composer package, then configure its surfaces, child components, validation, JavaScript and deployment.

Extension guides

Browse the complete guide to authoring and distributing FLEX extensions.

Your first extension

Generate, build, install and use a field, column and infolist entry.

Reuse existing controls

Configure FLEX children inside a parent without copying their implementation.

Configuration reference

Read every option’s type, default, bounds and override behavior.
Last modified on October 16, 2026