Projects and their layers are defined in the layer scripts and exported by openwater. Layers are listed in drawing order, top first. Style a layer with the button next to it in the side panel.
The tile URL for the background map. Saved in this browser.
Raster tiles: A URL serving raster tiles. See the wiki for a list of raster tile providers, for example .
Vector tiles: A URL specifying a vector style. See the wiki for a list of vector tile providers, for example .