[Yum] enable/disable repo options processed left to right?

[rpjday at mindspring.com (Robert P. J. Day)]

  for a newly-installed FC4 system, i want to ignore any other
repositories that might be currently enabled and just update from
FC4's official "updates-released" repo.

  can i do that with:

  # yum --disablerepo=* --enablerepo=updates-released update

or is there a more official way to do something like that?

rday