  After introducing non-minimal variables, the midpoint insertion of Y\bar Y in
cubic open Neveu-Schwarz string field theory can be replaced with an operator
N_\rho depending on a constant parameter \rho. As in cubic open superstring
field theory using the pure spinor formalism, the operator N_\rho is invertible
and is equal to 1 up to a BRST-trivial quantity. So unlike the linearized
equation of motion Y\bar Y QV=0 which requires truncation of the Hilbert space
in order to imply QV=0, the linearized equation N_\rho QV=0 directly implies
QV=0.
