- the highlighting for a set of 4 lines spilled outside the tile, so would
leave white residue if undone;
- the endpoints of sets of 4 lines were not completely overprinted by the
circle of an island (at least on Windows), which was untidy.
Fixed by reducing the gap width for groups of lines which wouldn't otherwise
fit in a tile (only).
git-svn-id: svn://svn.tartarus.org/sgt/puzzles@6421
cda61777-01e9-0310-a592-
d414129be87e