The Sample menu items

The discussion above has focused on the script command smpl. You can also use the items under the Sample menu in the GUI program to select a sub-sample.

The menu items mostly work in the same way as the corresponding smpl variant, except that when you use the item "Sample, Restrict based on criterion", and the dataset is already sub-sampled, you are given the option of preserving or replacing the current restriction. Replacing the current restriction means, in effect, invoking the replace option described above (the Section called Restricting the sample).