Where can I find the OpenDOS documentation?
You can get the OpenDOS documentation at http://www.thur.de/~igs/USEFULL/OPENDOS/. An alternative to the official documentation is the outstanding file nwdostip.txt in the MPDOSTIP.ZIP archive (http://www.uni-bonn.de/~uzs180/mpdokeng.html#M.MPDOSTIP) from Matthias Paul. This package isn’t an official document, but it contains much information about DR-DOS and other DOS related topics like NC and a file with many undocumented features of DR-DOS. Unfortunately, these files only exist in german language.