In this step, Datasqueeze attempts to establish the general orientation of the detector relative to the beam zero. For a laboratory apparatus, the detector has quite likely been rotated to the right or left in a horizontal plane (so that the beam zero is to the left or right of the detector). For a synchrotron facility, the detector has likely been rotated in a vertical direction. Check the box that best corresponds to the direction the 2theta arm has moved.
Click Next when you are ready to go on to the next step, Back to return to the previous step, or Restore to abort the entire process.