I think that a very important thing for the game, for starter and for have schemas of technologies and other game evolutions. The format is good but we must take care in image size because nowadays manual size is 10.5Mb with only 10 pages almost in blank. I think the problem is the 0ad logo in the portrait. I think this manual must be put in the subversion/version control to allow more user to deal with it. Start with the english version and allow other users start the translation to other languages like Spanish, Russian, German, etc. Great work.