One end of the traveler line is tied to the eye on the front of the front tube of the boom arch. Then run up and thru the eye on the top of the front tube of the boom arch. From there it runs over and around the block on the traveler car. Then it runs back thru the eye on the top of the boom arch front tube and over the fore/aft brace down to the lever cam cleat.
Hopefully that's at least as clear as mud....