  M. Kapranov introduced and studied in math.AG/9802041 the noncommutative
formal structure of a smooth affine variety. In this note we show that his
construction is a special case of microlocalization and extend it in a
functorial way to representation schemes of affine algebras. We describe the
formal completion in the case of path algebras of quivers and initiate the
study of their finite dimensional representations.
