Super. Danke!
I don't know how complicated it is to implement, but it would be nice to have an option ‘polygons filled’ when exporting a KML.

If I delete lines 5 to 136, I no longer get an error message!
It's easier for me to write in English. And even easier in French ;-)

It is not possible to import the test file into map.geo.admin.ch because the coordinates are outside Switzerland.[[File:Demo.png|none|auto]]

I have tried with htttps in the kml file and I have the same error message.

If I switch off the omega symbol, I get an error with the next external link in the KML file:[[File:CORS.png|none|auto]]
Myabe caused by "http" ? Could be solved if the links where with "https" ?
CORS mean "Cross-Origin Resource Sharing"

Thank you. Now it is Ok. I have just error messages when I import the KML file into map.geo.admin.ch.
[[File:CORS.png|none|auto]]

Thank you Droniste for your answer. I can't find where I can select LRDU before exporting. Can you help?

Danke für die Antwort. Ich habe Methode 2) verwendet, um ein Nordsymbol zu erstellen.
Eine mögliche Verbesserung von CaveRenderPro wäre, mehrere Stile für Nord- und Maßstabssymbole anzubieten.
Die beiden kleinen Topos (1:100) im Anhang illustrieren meine Aussage.
Mit freundlichen Grüßen.