When limber is run, it creates limb files for each image. They have the .LIM extension.

The write statement from UTILITIES/LIMBER.f

                    write(21,fmt='(I10,2f10.4,7D18.8)')
     .                      NSM, z0(1), z0(2), (V(K), K=1,3),

         1  421.6282  396.7001   -0.27572000D+00    0.87920000D-01    0.25789000D+00   -0.58774735D+00    0.15685397D+00    0.79369383D+00    0.31152657D-02
         2  423.8189  393.8016   -0.27116000D+00    0.94280000D-01    0.25996000D+00   -0.57923376D+00    0.16113519D+00    0.79907679D+00    0.31152657D-02
         3  426.1064  391.0282   -0.26660000D+00    0.10057000D+00    0.26195000D+00   -0.57156387D+00    0.16737871D+00    0.80330512D+00    0.31152657D-02
         4  428.3449  388.2709   -0.26201000D+00    0.10676000D+00    0.26387000D+00   -0.56351387D+00    0.17591834D+00    0.80715851D+00    0.31152657D-02
         5  429.4784  384.5938   -0.25740000D+00    0.11288000D+00    0.26569000D+00   -0.55530486D+00    0.18706649D+00    0.81033489D+00    0.31152657D-02
         6  431.8080  381.9813   -0.25274000D+00    0.11890000D+00    0.26742000D+00   -0.54678061D+00    0.20068766D+00    0.81286864D+00    0.31152657D-02
...