> ## Documentation Index
> Fetch the complete documentation index at: https://aletyx.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# DMN Reference

> DMN technical reference for Aletyx - FEEL reserved words and select expression syntax, plus pointers to conceptual Decision Model and Notation documentation.

Technical reference for Decision Model and Notation (DMN) implementation details.

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## Language Reference

* [Reserved Words](/docs/reference/dmn/reserved-words) — Keywords reserved in FEEL expressions
* [Select Expression](/docs/reference/dmn/select-reference) — Using select expressions in DMN

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> For conceptual DMN documentation, see **Architecture > Decision Automation > DMN**.