On Sat, Oct 11, 2008 at 03:33:53PM +0200, ??ukasz Jerna?? wrote: > Maybe an idea would be to modify the index in the v2 tileset files, to > keep an info if a tile was ever rendered? Additional metadata would be > a bit overkill... Doesn't work. If it's blank there won't be a tileset file stored. spaetz