There is a document (a LARGE document) in SYS$LIBRARY:VMSV4.DAT
which is supposed to outline the areas in VMS that is different between
version 3 systems and version 4 systems.

    It is not finished.  (If you read it, this will be obvious.)  We are
still working on it in our spare time (I'm serious).  Because of it's size,
I ask that you do NOT copy the file anywhere;  to look through it with
an editor, use EDT/READ and you can do anything you want (search, etc).
You can print it, but you probably won't want to until it is more complete.

    It only exists on kim and charm, since they are the only V4 systems.
It will be updated as new chapters are finished.  You will get announcements
of same when same is announceable.  And if you think this is hard to
follow, just wait till you read the update descriptions.

    Incidentally, there are two tables of contents;  one that shows the
general outline, and one that is much more specific (hence longer).  I
intend to provide an index (eventually) but I am saving that for when the
text is finished.

    Bug reports and typo detections are encouraged.  Please reply to this
address via vaxmail (only).

sas