/Docs/G/ProseObject-Stack/Cmacc_Extensions_0.md
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Cmacc is text, not calculation. We don't want to create a new programming language. Cmacc can be interfaced to programming environments by having unmatched variables be processed and Values returned by the environment, included expressly or implicitly as a default File. E.g., {Math.3 * 5} might return 15 if there is no Key/Value like "Math.3 * 5=TBD by negotiation". See Blockchain interface.