[Zope] ZCatalog : Z Class?

Hi, Pls, what is a Z Class? Thanks ===== Hamzat kamaldeen Ishola Dnet Systems Limited. 223 Ikorodu Road, Lagos. Nigeria. 234 1 7749381, 234 08033011305 --- Making Mistake is not a problem but readiness to admit it. Sentimental decisions are not mistakes but failures !!! Mistake is an opportunity to see better !!! __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com