Bushnell GPS Trail file (bushnell_trl)
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## Bushnell GPS Trail file (bushnell_trl)

This format can...

- read and write tracks

This format supports tracks from Bushnell GPS receivers, notably the Onix 400™.

This format reads individual .trl files as written by the GPS. As this is a reverse-engineered format, it's not understood how (or even if) long tracks, in particular, span multiple files so initially this format is most effective on tracks under a few thousand points.

When writing tracks, a maximum of 4502 points is supported as this is the most we believe these units can represent in a track.

The output base filename, converted to uppercase and stripped of everything but letters and digits, is used for the trail name inside the file itself.

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