\ARRAY ROTATION_MATRICES
  1 90.000   0.000 90.000 90.000   0.000 0.000
  2 90.000 180.000 90.000 90.000 180.000 0.000
\END

The format of the arguments is the same as the call to GEANT routine GSROTM. In the above example, two matrices are defined. The first argument is the number of the rotation matrix. The next 6 arguments are the q ,f of the new x,y and z axes with respect to the old x,y and z axes in degrees. q,f are defined in the usual cylinderical co-ordinate system conventions. So the new x axis is 90 degrees to the old Z axis and has an azimuth of 0.0 degrees. i.e. it coincides with the old x axis. Similarly, one can easily see that the new y and z axes coincide with the old y and z axes. i.e. Rotation matrix 1 defines an identity transformation. Similarly, it is easy to see that rotation matrix 2 defines a 180 degree rotation about the old y axis. Since these matrices have numbers 1 and 2, they fall in the range 0-999 and must occur in the RCP file MOTHERS.RCP