> 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)
- [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)
- [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)


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