> 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/5_essential_nodes_and_concepts/5-3_the-building-blocks-of-programs.md).

# The Building Blocks of Programs

Once we are ready to dive deeper into developing Visual Programs, we will need a deeper understanding of the building blocks we will use. This chapter introduces fundamental concepts around data - the stuff that travels through the Wires of our Dynamo program.

![](/files/jjeM8n8eoDefJ3hheGe7)