Hello. The master format should be the digitized images of the original book pages. No font, nor footnote, nor math, nor any problems in readability, nor in representing the original text. I find the digitized images more pleasant than any ascii, html, word or TeX text. I don't know the reason but perhaps the art of typesetting and printing was better then than it is now! Any other format can be generated from the digitized images. If some conversion between html and TeX (say) does not go well, one can always check against the original typesetting from the images. So, keep archiving the digitized images!! 200 dpi with 32 grey levels starts looking ok but 300 dpi with 256 levels should be enough even for math texts. Forget 1-bit digitizations completely!!! Best regards, Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software