OK, now I understand but unfortunatelly, I see no clear way how to solve this problem :(
You may redefine this symbol with some white border, but then block borders will not be closed. It is probably not right solution. Other solution is to add some "tunnel like" block generator into xtherion, but it requires some programming and re-clicking all the maps. The most clear solution is to add some topology detection between area symbols and other symbols, but I am afraid, it is almost impossible to do it in metapost :( S. Quoting Andrew Atkinson <andrew at wotcc.org.uk>: > Sorry I was not clear enough, yes they are always on top, but therefore > sometime appear half on a block and half off, which does not look quite > right
