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What's the difference?

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All stages · Demo 202

GLN checksum

Choice warehouse / store / dc. A Global Location Number is thirteen digits with an EAN check. Jev never runs the 1-3 weights.

ChoiceGLN EAN-13 in JS

Barcode pips. 8712345678906 lights a warehouse. A last-digit flip rejects. Twelve digits need 13.

replaysite —gln —

STANDBY

All 4056 stages

Educational stage on jev.page — not the official TypeSafe console. Live calls go to POST https://api.typesafe.ai/v1/systemone from your browser when you paste a key. Without a key, the stage plays a recorded decision shaped like jev-1.13.0. Jev does not write the UI copy.