Fresh (relatively) installs of OES2-SP3. Registered with novell update site.

However, what/how to update is giving pause. I'm seeing a number of items, some of which were checked "by default", some are not.

For instance,

SLES10-SP3-Updates is unchecked.
SLES10-SP3-Pool is checked

OES2-SP3-Updates is checked.
OES2-SP3-Pool is checked

There are others. But, what is the difference between update and pool, and why were these selected this way?