> For the complete documentation index, see [llms.txt](https://docs.novacura.com/flow-connect/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough.md). # Walkthrough - [Introduction](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/introduction.md) - [Expressions and programs](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/expressions-and-programs.md) - [Anatomy of a program](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/anatomy-of-a-program.md) - [Variables](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/variables.md) - [Simple types](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/simple-types.md) - [Nullable types](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/nullable-types.md) - [Records](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/records.md) - [Sequences](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/sequences.md) - [Other types](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/other-types.md) - [Arithmetic](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/arithmetic.md) - [Other expressions](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/other-expressions.md) - [Queries](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/queries.md) - [Conditionals and loops](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/conditionals-and-loops.md) - [Function definitions](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/function-definitions.md) - [Yielding](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/yielding.md) - [Built-in functions](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/built-in-functions.md): This page describes the built-in functions of the Flow Connect platform. Note that additional functions are available in the built-in modules (described in subsequent chapters of this document). - [Text module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/text-module.md) - [DateTime module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/datetime-module.md) - [DeviceSessionInfo module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/devicesessioninfo-module.md): The DeviceSessionInfo module contains functions for reading device, network, environment, user, client settings and work item information. - [Seq module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/seq-module.md) - [HTTP module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/http-module.md) - [CSV module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/csv-module.md) - [LocalStorage module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/flowscript-local-storage-module.md) - [JSON module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/json-module.md) - [Trace module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/trace-module.md) - [Record module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/record-module.md) - [XML module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/xml-module.md) - [FileSystem module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/filesystem-module.md) - [SFTP module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/sftp-module.md) - [FTP module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/ftp-module.md) - [NiceLabel module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/nicelabel-module.md) - [InforM3 API module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/inform3-api-module.md) - [OPC UA module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/opc-ua-module.md) - [OPC UA module function options](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/opc-ua-module/opc-ua-module-function-options.md) - [Crypto module](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/crypto-module.md) - [Custom modules](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/custom-modules.md) - [Custom Types](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/custom-types.md) - [Appendix: Subtyping rules](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/appendix-subtyping-rules.md) - [Appendix: Escape sequences](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/appendix-escape-sequences.md) - [Appendix: Type checking errors](https://docs.novacura.com/flow-connect/reference/reference/flowscript/walkthrough/appendix-type-checking-errors.md) --- # Agent Instructions This documentation is published with GitBook. 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