# io Library

- [io.open()](/opentx_2.3/part_ii_-_opentx_lua_api_programming_guide/included_lua_libraries/io-library/io.open.md)
- [io.close()](/opentx_2.3/part_ii_-_opentx_lua_api_programming_guide/included_lua_libraries/io-library/io.close.md)
- [io.read()](/opentx_2.3/part_ii_-_opentx_lua_api_programming_guide/included_lua_libraries/io-library/io.read.md)
- [io.write()](/opentx_2.3/part_ii_-_opentx_lua_api_programming_guide/included_lua_libraries/io-library/io.write.md)
- [io.seek()](/opentx_2.3/part_ii_-_opentx_lua_api_programming_guide/included_lua_libraries/io-library/io.seek.md)