The other major change is access control. You can now put a file called "ACCESS" in a any directory, an example of which is /home/html/sl1/engonly/ACCESS, to restrict access to particular machines. There is also an example /home/html/extras/ctrlonly/ACCESS which restricts access to just the control group machines.
With this access control, we can place published material electronically available only to the members of the group - and thus avoid breaking copyright regulations since this is not publicly available.
The file is written in HTML - HyperText Macro Language (I think). See my home page for an example - /home/html/sl1/sl1.html
This file can then point to other files which you think are of interest to the rest of the world. In particular, this system is intended to give people access to technical reports written by members of the control group. You can include dvi files, postscript files, and just plain text files, as well as a lot of other file types.
Then, anybody using Mosaic (or any other world wide wed client) can point their client at "http://www.eng.cam.ac.uk/" to see our stuff. It is not necessary to restrict your links to point only to local files. You can point them at other places also. The link names have the form
protocol://host/filename
For example, files in my /home/html are referenced by
http://www.eng.cam.ac.uk/~pollyhtml/sl1/whatever