# 65. SP-GiST Indexes

- [65.1. Introduction](/11/internals/sp-gist-indexes/introduction.md)
- [65.2. Built-in Operator Classes](/11/internals/sp-gist-indexes/built-in-operator-classes.md)
- [65.3. Extensibility](/11/internals/sp-gist-indexes/extensibility.md)
- [65.4. Implementation](/11/internals/sp-gist-indexes/implementation.md)
- [65.5. Examples](/11/internals/sp-gist-indexes/examples.md)