Century cribbage board

Linda sent us this question by email:

Hi, for the life of me I can not find any info on this. We have a, "Century continuous track cribbage" (121 holes)board by ARE JAY GAME CO. INC., Cleveland Ohio Made in USA.

In the center (the infield) are holes for scoring:
GAMES WON (which is simple enough) Goes up to 9 each for R W & B
LEGS (Not sure how or why to use these) Also has 9 holes for R W & B
SKUNKS (Who pegs here? The player skunked or the player who skunks you?) Also has nine holes etc.
TOTAL POINTS HOLES 1-10, then 20,40,60 etc up to 100 & then 200,300 etc up to 900 for R W & B
(What points do we put here and why? Is there a total we are heading to or is that arbitrary?)
It also says that it is a "2 3 4 6 player board"
So how do you determine the winner using all the above holes? I have no clue on any of this and have researched till I can't see straight. Any and all info would be greatly appreciated. This seems to be the only board with all these extras and we just don't know the right way to use them or why. Please help?

Does anyone have one of these boards who can help out Linda with some information?