How to work here

How the Platform composes. The unit of composition is the Spine — an app's authored declaration of which primitives it names. Recipes stitch Spines into working compositions.

The ladder

Each app climbs a ladder of rungs; a rung means a primitive is named in the app's Spine, not that the app runs. Gaps are declared, not hidden — the catalog shows both. Read the catalog for the live numbers.

The conventions

Worked example

Pick an app from the catalog, read its rungs and its declared gaps, then read Reference for the seam conventions. That's the loop: read the Spine, compose the recipe, ship.

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