> For the complete documentation index, see [llms.txt](https://docs.cosmocloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cosmocloud.io/flow-builder/node-types/variable-nodes/special.md).

# Special

- [Build Map](https://docs.cosmocloud.io/flow-builder/node-types/variable-nodes/special/build-map.md)
- [Set Variable](https://docs.cosmocloud.io/flow-builder/node-types/variable-nodes/special/set-variable.md)
- [Exists Check](https://docs.cosmocloud.io/flow-builder/node-types/variable-nodes/special/exists-check.md)