VMS internals

[Brian L. Stuart]

Does anyone know of a good on-line reference to VMS internals.
I'm not looking for anything too in-depth.  At the moment, I'm
mostly looking for something along the lines of "here are the
major components and how they fit together."  I've got most
of an orange wall and a copy of the old software handbook,
but I'm not finding anything like that there.  I know about
the VMS Internals and Data Structures book and if I have to
I'll find a copy, but I'm not really looking for something
that detailed anyway.

Thanks in advance,
Brian L. Stuart