The boundary of a generic holomorphic curve in a 3-dimensional Lagrangian submanifold is a link.

We study the boundary values of holomorphic curves in the skein model of the Lagrangian. Together with SFT

stretching and the 4-chain used in the definition of open GW-invarints this gives a geometric approach to the

relation between gauge theory and open topological string and to large N duality.