Para B 2 (d) says as you have quoted:
From Dalunang eastwards the cease-fire line will follow the general line point 15495, Ishman, Manus, Gangam, Gunderman, Point 13620, Funkar (Point 17628), Marmak, Natsara, Shangruti (Point 1,531), Chorbat La (Point 16700), Chalunka (on the Shyok River)...