L4 - Rules as Code

L4 wants to be the new English whenever you're writing rules.

This way, your computer will be able to evaluate what you're trying to say just as well as your lawyer. Use it for guidelines, policies, legislation or contracts instead of English or whenever you feel like regulating something.

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L4 Learning Guide

A getting started for the aspiring and actual legal professional

L4 Reference

The complete language reference. Find explanations for keywords and patterns.

L4 Online-Editor

Write L4 online with error checking, logic visualisation and in-editor evaluations.