The point of it

To keep notes on each entry, using user-defined categories such as whether it involves a Noun or a Verb, whether it's Positive or Negative. You can later sort the entries using your classification.

 

How to do it

With a concordance on screen, simply press a keyboard letter, such as V or N. To type more (e.g. "Noun"),  double-click the entry in the set column and type what you want.  See user-defined categories for more explanation, and colour categories for putting  colour in this column .

 

The status bar shows you are in Set mode like this.

 

 

The column already has something written in it! Or, I mistyped..

If you have more than one search-word, you will find the Set column filled with the search-word for each entry.

To clear the current entry, you can type the number 0. To clear the whole Set column, choose Edit | Clear Set column.