# FZLang documentation Choose a section to explore the FZLang documentation. - [The book](./book/index.md) — a guided introduction to the language. - [Reference](./reference/index.md) — types, operators, grammar, and runtime diagnostics. - [Internals](./internals/index.md) — virtual machine implementation details. - [Standard library](./stdlib/index.md) — built-in functions. - [Language philosophy](./philosopy.md) [Документация на русском языке](../ru/index.md)