Hi there,
Yesterday, I read the complete help file on searching, included searching in the comment column

:-((. Simply aw(ful)..e inspriring! Well, I tried virtually every thing, but got always zero hits

. But one strike at last

!!
Using the name&location tab after choosing the appropriate location, it should have been working when entering cmt:john;Doe (the Bolean rule) into the name&location field. But it did not return anything. To cut a long story of trial and error short. Here is the working method: 1. Choose the appropriate location(tree). 2. Check the tag box and check Comment box. 3. Make two searches: one for John, a second one for Doe. In fact I used much rarer names :-)) and got 38 first and 36 second hits which is OK because there were a few hits with the first name in the comment field only.
I did not find any Boolean operation that returned any hits. It would be interesting to learn how to formulate such a search with two words together as a free text search.
I love XYplorer and use it daily. Incidently, I used "Dupes" for the first time on exactly the tree in question, and got 1300 duplicates. Most of them are in different folders, and I must find a way to decide which one to delete. It would be a nice feature to get an image when clicking on a duplicate. That would make it easier to make a decision which one to delete.
Thank you for your help.
Donpascual