> For the complete documentation index, see [llms.txt](https://doc.open-tx.org/opentx-lua-reference-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.open-tx.org/opentx-lua-reference-guide/part_ii_-_opentx_lua_api_programming_guide/included_lua_libraries.md).

# Included Lua Libraries

| Lua Standard Libraries                                                                                    | Included                              |
| --------------------------------------------------------------------------------------------------------- | ------------------------------------- |
| package                                                                                                   | -                                     |
| coroutine                                                                                                 | -                                     |
| table                                                                                                     | -                                     |
| [io](/opentx-lua-reference-guide/part_ii_-_opentx_lua_api_programming_guide/included_lua_libraries/io.md) | since OpenTX 2.1.0 (with limitations) |
| os                                                                                                        | -                                     |
| string                                                                                                    | since OpenTX 2.1.7                    |
| bit32                                                                                                     | since OpenTX 2.1.0                    |
| math                                                                                                      | since OpenTX 2.0.0                    |
| debug                                                                                                     | -                                     |