Hello fellow mappers! I've got a bit of a pet peeve and was wondering if anyone on here could help.
Whether it's a border (multi-polygons), an area, a river or whatever. I'd like to know if any of you can give me some tips and tricks for when it comes to overlapping lines which should belong to different relations, so I don't have to redraw said complex object several times.
Practically, let's say I want to make a national park follow the coastline - how would I do that without painstakingly making every single dot alongside the coastline a part of said relation?
Thank you in advance, Thanik.