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4.4.4 Batch processing

If you select a number of rows and then click `Edit` / `Group`, `nip2` will group the rows together. Now if you select the group and click on an item in the `Toolkits` menu, `nip2` will apply that operation to every item in the group. You can group groups, and you can mix grouped and non-grouped rows freely.

If you save a group, `nip2` will write each item in the group to a separate file, incrementing the filename each time.