In this step in the calibration process, you are given the opportunity to save the d-spacing(s) you used in a calibration file. If you already got the parameters out of a .std file there is probably no point to this, but if you typed them in by hand then it may be convenient to save them for future use.
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.