How to make easy map borders?

To be more specific, is there a way to copy a section of a border? Say, if i wanted to redraw europe from scratch, is there a function that allows me to copy the shape of the france-spain border so i don't have to draw it twice when making each country?

Yes, there is copy paste function in map-maker. Just copy the whole country borders and delete the rest you don't need or copy just a selection of a country's border.
Never did it this way; preferred to draw them from scratch.
Dunno if editor is working properly at the moment; good luck!