Spintax

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Spintax is a template language for producing many variants of a text from a single source. Beyond flat alternatives, it covers permutations that pick and order a subset, scoped variables, value-driven conditionals, locale-aware plurals and includes. The point is where variation comes from. Generating each text from a model costs money per output and drifts in quality across a large run — by page 400 the outputs converge on the same shapes. Spintax inverts that: have a model draft one richly varied template, review it once, then expand it locally, deterministically and for free. Every variation is one you defined, and an editor proofreads a single template instead of a thousand texts. The language is implemented by five independent open-source engines — JavaScript, PHP, Python, Object Pascal and .NET — all verified against one shared corpus of golden fixtures, so a template renders identically wherever it runs. Nothing calls a hosted service: rendering happens inside your own runtime.