(svn r4802) - Codechange: replace _stringwidth_base and associated magic numbers with a FontSize enum, using the numbers (which are SpriteIDs) in only the places needed.
/* $Id */
KNOWN BUGS / PROBLEMS:
Normal and elrail depots look the same. Use 'X' (transparent buildings)
to distinguish between them
Missing curors / icons for construction (currently using the conventional ones)