# openui_lang v1.0.0 - Table of Contents > High-performance Elixir + Zig NIF parser, streaming engine, evaluator, and prompt generator for OpenUI Lang 1.0. ## Pages - [OpenUILang (openui_lang)](readme.md) - [OpenUILang Usage Rules](usage-rules.md) ## Modules - [OpenUILang](OpenUILang.md): Elixir implementation of the OpenUI 1.0 Language specification (`openui-lang`). - [OpenUILang.ZigNIF](OpenUILang.ZigNIF.md): Native Zig NIF bindings for OpenUI Lang 1.0 lexing, preprocessing, auto-closing, Pratt expression parsing, TUI symbol extraction, and statement merging. - Exceptions - [OpenUILang.Error](OpenUILang.Error.md): Exception struct raised or returned when an OpenUILang operation fails.