Lots of little things. Mostly when talking about an animals origination, wc is wild caught, cb or ch means they were born or hatched in captivity, and cbb means they were born and bred in captivity. The numbers denote sex. 1.0 is a male, 0.1 is a female, 0.0.1 is unsexed. So if I had 2.3.1 normal ball pythons, I would have two males, three females, and one I either hadn't or couldn't sex for some reason (you don't see unsexed often in reference to snakes, though it may be more common in lizards).
Other abbreviations could include RI, which is a respiratory infection (one of the more common bp ailments). Then there are some other terms, such as dom, codom, or recessive. In reference to various traits, dom is dominant, recessive is recessive, and a codom is an incomplete dominant, or essentially a dominant trait that expresses itself differently in its homozygous form (a super). For example, the super form of a lesser is a blue eyed leucistic, which looks dramatically different.