Can I do this with YUM?

[Reg Clemens]

With apt-get I could put 3lines in the /etc/apt/preferences file,
and keep a given package (or group of packages) from being updated.

I dont see that capability with YUM.
Is it there and Im just missing it???

[ The problem is with an update of qt that is causing problems, I need
  to revert to a previous version till the current one (or the program
  using it) is fixed ]




-- 
                                        Reg.Clemens
                                        reg at dwf.com