Cartograph supports the new V4 mapsforge styling, as well as the older V3 format. The V4 format introduced new styling options which can be changed for each style under the point
Style name: The name of the style shown in the Cartograph app.
Layer: The layer defined in the style sheet. If the layer has sub-entities, then these entities will be shown in a checkable list.
Style file(read only): The storage location of the style file.
When changing V4 options it might be necessary to reload the map to see the changes on the map.