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

# Reference

This section has articles with more technically oriented content. That is, each article explains some topic or concept in depth, getting "into the weeds".

For example, there's an article on all the details of the [export file](/reference/data-export.md), and an article on [cost per use](/reference/cost-per-use-cpu.md).

Please let us know if you have any feedback on these articles or have ideas for new articles at <support@openalex.org>