Update / fix links to external ressources
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@@ -124,7 +124,7 @@ In the above there are many common operations, like setting the property of the
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### Putting it all together
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With the above, you should be able to read through the [source code to `ol/format/GPX`](https://github.com/openlayers/openlayers/blob/main/src/ol/format/gpxformat.js) and get a feel for how it works. Start from the bottom of the file and work upwards. It's also useful to have [an example GPX file](https://openlayers.org/en/latest/examples/data/fells_loop.gpx) and [the GPX specification](https://www.topografix.com/GPX/1/1/) to hand.
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With the above, you should be able to read through the [source code to `ol/format/GPX`](https://github.com/openlayers/openlayers/blob/main/src/ol/format/GPX.js) and get a feel for how it works. Start from the bottom of the file and work upwards. It's also useful to have [an example GPX file](https://openlayers.org/en/latest/examples/data/fells_loop.gpx) and [the GPX specification](https://www.topografix.com/GPX/1/1/) to hand.
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### Handling errors
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@@ -129,7 +129,7 @@ export function getLength(geometry, opt_options) {
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/**
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* Returns the spherical area for a list of coordinates.
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*
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* [Reference](https://trs-new.jpl.nasa.gov/handle/2014/40409)
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* [Reference](https://trs.jpl.nasa.gov/handle/2014/40409)
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* Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for
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* Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion
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* Laboratory, Pasadena, CA, June 2007
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