File formats aren't covered by Copyright in the US. A specific description of it can be (especially if it's more of a tutorial), but it sounds like you wrote this one yourself.

As for code, CPAN would probably be the best place to post it, but yes, you could post it to CUFP.

In reply to Re: Is code related to reverse engineering appropriate? by ikegami
in thread Is code related to reverse engineering appropriate? by lilphil

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