IA recently discontinued the production of DjVu files for new book uploads; nevertheless it uses and shares _djvu.xml files containing the DjVu mapped OCR layer, and the most complex and detailed _abbyy.gz file, a compressed xml file with any possible detail about ABBYY OCR output.
As you know, DjVu is presently the most useful format used in wikisource proofreading work.
Two questions:
- is DjVu a file format really necessary, or al least very useful, for wikisource projects?
- if it is (as I think), can Mediawiki “adopt the orphan” and fastly work about any possible support for that file format?