  We start with an n-point correlation function in a conformal gauge theory. We
show that a special limit produces a polygonal Wilson loop with $n$ sides. The
limit takes the $n$ points towards the vertices of a null polygonal Wilson loop
such that successive distances $x^2_{i,i+1} \to 0$. This produces a fast moving
particle that generates a "frame" for the Wilson loop. We explain in detail how
the limit is approached, including some subtle effects from the propagation of
a fast moving particle in the full interacting theory. We perform perturbative
checks by doing explicit computations in N=4 super-Yang-Mills.
