C. Hypertext files Hypertext files are hard to archive since at the moment they are entirely software dependent. Admittedly, the Guidelines are rather extensive. When the text is marked up with SGML, it will essentially archive, and also document, itself. E. Relational databases Relational databases, regardless from the medium, are, basically, differently organized and pose as such a problem. As mentioned earlier the problems involved with this kind of data organization can theoretically be solved.
Good documentation is an absolute prerequisite.
F. Document servers and possibly electronic discussion lists Some document servers can contain, occasionally or not, information which might be of interest for historians. These can be actually structured data or information of a more loose nature. Especially here one has to be careful and check what exactly is the background of the data. In the historical world there is probably more awareness for this than anywhere else. A sceptical attitude of historians on this is something which should not be underestimated.