Version 1073 was commited by steve on 2009-07-02 12:55:28 +0100 (Thu, 02 Jul 2009) Add highway shields and other ways of modifying values in the style files. Implemented as a series of modifiers that can be used in the style files. HighwaySymbolFilter: inserts the highway symbol markers after cleaning up the name. HeightFilter: Prepends the value that makes the garmin display as an elevation. SubstitutionFilter: allows arbitary substitutions within a value. PrependFilter: Prepend one the garmin magic values to a string. Patch by Toby Speight as the end result of a discussion involving a number of people see http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2009q2/001573.html for the full details. This only appears to work with 8bit outputs.