Cvsup and RELENG_4 or RLENG_4_9

[Bob Collins]

I have read through the keeping current section of the book a few times
and I am a bit lost. If I read correctly, to upgrade source(I am running
RELEASE-4.9) I can use either RELENG_4 or RELENG_4_9. Although I am not
sure if I need one, the other, or both. And if both, which order, if it
matters?

Further reading indicates that cvsuping with RLENEG_4_9 will update only
critical items. Again, if I am reading this correctly, should I then
cvsup both so I have all the sources corrected, or is RELENG_4_9 enough
for a production machine?

Thanks for your patience with this. I have also searched a bit about it
and I am on the right track, I just think I need some clarification as
to which one is `best' for a production machine.

FWIW, this will be for a dual processed server.

-- 
Bob

"Play is the work of children. It's very serious stuff. And if it's
properly structured in a developmental program, children can blossom."
-Bob Keeshan aka `Captain Kangaroo'