+# This is a helper script for generating pimped up OSM tiles.
+# The standard openstreetmap-carto-style as used on openstreetmap.org
+# looks extremely dull in Zoomlevels 0-8. They look a lot nicer if
+# "landuse" (forests, deserts) is shown. One way to do this is to
+# generate two modifications of the osm-carto style, render tiles
+# in each style, and then merge them:
+# - For the background, essentially empty all .mss files except
+# style.mss and landcover.mss - you need to throw out everything but
+# the landuse. For the landuse, make sure to adapt the rules so that
+# it is shown on zoomlevel 8. Render only zoomlevel 8.
+# - For the foreground, change style.mss: background-color within
+# Map { } needs to be "transparent" (without the quotes). #world in
+# shapefiles.mss needs to be removed. Render zoomlevels 0-8.
+# Then use this script to merge back+foreground. Voila, nicer looking
+# tiles!
+
+# WARNING: Doing this for zoom level 0 in HD requires 90 GB of
+# space in $TMPDIR!
+# That's why levels 0+1 are not generated by default (you need to change