Documentation for inventory and inventory_by_location datasets

Where can I find the documentation for the inventory and inventory_by_location datasets?

These datasets are mentioned in this post and I have been able to use them myself

https://community.shopify.com/post/3044343

However, I don’t see these datasets in the Shopify QL documentation and I can’t find anything with google

https://shopify.dev/docs/api/shopifyql/datasets/orders-dataset