Homer
Naming Conventions in Library creation tend to be personal preference for some users. I myself use "skt" as the prefix to match the "hdr" prefix.
If you have not yet downloaded the FREE Starter library from ODA on the Mentor website, you should. You can download it from the link below, and included in the documentation is a baseline naming convention that will work very well for your personal library creation.
Check it out!
Optimum Design Part Libraries for Xpedition - Mentor Graphics
Thanks,
Vern