Hi Gerd I'm working through your codebook discoveries but finding the patches hard to undo/redo with other changes happening to display. I'd much prefer you just committing all display changes as you go and I'll update. I doubt if this will inconvenience anyone else at the moment. Thanks Ticker On Tue, 2021-12-28 at 08:28 +0000, svn commit wrote:

Version display-r574 was committed by gerd on Tue, 28 Dec 2021

evaluate magic number when reading MDR 28. Not sure yet about the exact meaning, but some Garmin maps have e.g. MDR 28 header flags 0003 and both MDR 21 and MDR 27 are empty.

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