I see it on the editor but what does is doing?
“i see it on the editor, but what does it do?”* ftfy
also, its the legacy editor, but with some new features, a lot harder, other shortcuts, and a high chance to corrupt your map.
The devkit editor is a vastly advanced version of the legacy map editor, if you don’t know what you’re doing you should stay away from it. However, with a good level of expertise, devkit has more potential usefulness, with every official and permanently curated map after Russia having been made mostly in devkit.