Excerpt from a mail to [Yuri Astrakhan](https://meta.wikimedia.org/wiki/User:Yurik) by @Dido3 (Tue, Nov 13, 2018 at 4:28 PM):
> Kartographer is a wonderful tool to illustrate articles.
> Unfortunately OSM data in Bulgaria is not abundant - usually a blank map tile is presented. A possible resolution for me is to use a free WMS tiling service from the Bulgarian open BGMountains project (through their WMS tiling server www.kade.si ). However, I see the Kartographer extension bound to a single WMS tiling service at MediaWiki.
> My question is: does Kartographer support attaching to an arbitrary free mapping service provider different from the MediaWiki map? If not, is there a way to provide such an option (e.g. for the Wikipedia Editor to enter an arbitrary WMS link to use it within the map frame)?