Mac OS 7.6.1 CD: Installer says update not install

The system software installer on the 7.6.1 CD I have says the installer is 7.6.1 update. I thought my MacOS CD would install the entire version of MacOS 7.6.1.

The Mac OS 7.6.1 CD (part number 691-1613-A) will install a full version of MacOS 7.6.1.

Published Date: Feb 18, 2012