> 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/how-it-works.md).

# How it works

This section has in depth articles geared towards understanding why.

For example, [Where do the APC prices come from?](/how-it-works/where-do-the-apc-prices-come-from.md)

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