> For the complete documentation index, see [llms.txt](https://modelico.javiercejudo.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://modelico.javiercejudo.com/basics.md).

# Basics

* [Optional / null values](/basics/optional_values.md)
* [Deep operations: getIn and setIn](/basics/deep_operations.md)
* [Custom serialisation](/basics/custom_serialisation.md)