I took al fast look to Help:Djvu pages (with different names into different
projects) in Commons:, en.source, fr.source; I found interesting suggestions
about djvu files but I didn't find a detailed help about djvu text layer,
nor about its manipulation. So, I imagine that such a page could be really
written by scratch to share needed details. Where? What are your suggestions
for its name? I found that
wikisource.org has a poor setting of help pages;
I presume that not so many users browse it; is perhaps Commons the best
project to collect scripts, tricks, ideas?
Alex