The third step is required to determine the processing parameters for the directly detected dimension. To allow to do so, the first plane is currently recorded completely for Bruker data sets, i.e. all FIDs are present. For Varian data sets it is not the case, but one can still use the incomplete first plane to determin the phasing parameters, or even record the first plane separately and determine the phasing that way. Edit the prefilled NMRPipe script to suit your case. E.g., change input file, region of interest, phase corrections, etc. You might need to create a new directory for the output file. This step is interactive, in the sense, that you can modify the necessary parameters a few times and check the result with nmrDraw, just as you would normally do with a regular spectrum. Script lines between the capitalised comment lines are copied for the next step's script, which is why DO NOT DELETE OR MODIFY these comment lines. When you are satisfied with the phasing, move to the next step.