yup, typically the business end, as jonathan says..
if you go to the beginning of the wiring section, it will tell you how the connectors are viewed & labeled, and how to tell a male from a female in the drawings.
as for the color abbreviations... you cant have "B" stand for several different colors - ie: black, blue, brown... so some other letters need to be chosen to differentiate.
B is usually reserved for black... blue is sometimes BL or Bl, but not always.. I have seen brown listed as Br before...
lol, charcoal is not a wiring color, tho.. so probably not