Hello Hans.

To be honest: No, I havenīt checked the navtech docs yet (didnīt find the time to go through all that legal stuff I tend to read before I click "I agree"). But I did get some sample data in that format (or at least the person who sent the data to me said it was), and had a (very) brief look at it today. As far as I can see, the whole database is kept as a plain text file. Though this might be great for editing and human reading, it certainly ainīt no good for use on the empeg, mainly because of tightness of memory, but also for speed reasons.
Just some quick thoughts though.

cu,
sven
(MkII 12GB blue, #080000113)
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proud owner of MkII 40GB & MkIIa 60GB both lit by God and HiJacked by Lord