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# J User License (JUL)

You must have a JUL to use J as a programmer.
A JUL is like a driver's license. It has an annual fee and expires if not renewed. There are 3 JUL types:
Commercial $600 - you use J at work
Non-commercial $100 - you do not use J at work
Free $0 - students, new users, or you only use releases older than 18 months
You must renew your JUL annually at the then appropriate fee. If you stop using J, you can renew an expired JUL when you start again.
Users with a prokey valid for updates or covered by a site license still need a JUL and should indicate this status on an application that includes no payment.
Click on Email JUL to create an email message formatted with a JUL application.
If you prefer regular mail or want to pay by USD check or money order see Mail JUL.
Teachers can apply for an Free JUL that covers their students, rather than having each student apply individually. Click on School JUL to create a formatted email message.

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