What do all these abbreviations mean?!

I know CO, CWC, BSL, and now APL. But what is TPL? In fact, what is the list if hair "markers". (chin, shoulder, APL, BSL, mid-back, waist, hips, butt, classic, upper-thigh, mid-thigh, knee-my goal!, calf, ankle, floor) Am I missing anything? Are there any other abbreviations I should know about?