> ## Documentation Index
> Fetch the complete documentation index at: https://docs.meridian.surf/llms.txt
> Use this file to discover all available pages before exploring further.

# Function flow

> Action blocks for function flow in the Meridian builder.

Reusable subgraphs invoked from Execute a Function blocks. Keeps large command or event flows modular.

Categories mirror the builder block palette. Search the palette or use the links below to jump to a specific block.

## Blocks

* [Function](/builder/action-blocks/function-flow/function-start) — Marks where a reusable function starts when called from an Execute a Function block.