[CentOS] need yum message translation

[root]# yum update
Setting up Update Process
Setting up repositories
dag                       100% |=========================| 1.1 kB    00:00
update                    100% |=========================|  951 B    00:00
base                      100% |=========================| 1.1 kB    00:00
addons                    100% |=========================|  951 B    00:00
extras                    100% |=========================| 1.1 kB    00:00
Reading repository metadata in from local files
Reducing Dag-RHEL-Yum to included packages only
Finished
No Packages marked for Update/Obsoletion

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I assume this means that yum found a newer version of some package, but 
it wasn't in the explicit list of packages I've defined for dag?  Just 
curious.

Cheers,