# Reference

<!-- diataxis: reference -->

Technical specifications and API details for plone.pgcatalog.
Use these pages as lookup material while working with the package.

```{toctree}
---
maxdepth: 2
titlesonly: true
---
configuration
query-api
index-types
zcatalog-compat
permissions
schema
ipgindextranslator
search-backends
sql-functions
changelog
```
