> For the complete documentation index, see [llms.txt](https://primer2.dynamobim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://primer2.dynamobim.org/8_coding_in_dynamo/8-1_code-blocks-and-design-script.md).

# Code Blocks and DesignScript

The code block is a unique feature in Dynamo that dynamically links a visual programming environment with a text-based one. The code-block has access to all of the Dynamo nodes and can define an entire graph in one node. Read this chapter closely, as the code block is a fundamental building block of Dynamo.

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