Using the HUB building tools for data files: check-linux (or check.exe for MS-DOS) can be given to persons working on areas for your game. These programs should be used to test human made object files (instructions for creating these are in docs/data/basics.txt) for errors. hubread is for the administrator. It should perform the same tests that the checker does, but when no errors are found it *builds* "raw" HUB data files suitable for adding to a single DB file. addarea is a script for adding a file created with hubread to another file (a single DB for instance.)