Thank you for your answer! I have tried to find topics on the forum with the word "hierarchical" and found this (viewtopic.php?f=56&t=24233&p=104002&hilit=hierarchical#p104002). It looks like this person does with the tags what I'd like to do with them. That's not intuitive way (maybe better, maybe worse, I don't know - using it will answer me if it is good way) from my point of view but at least it offers the same functionality which I'd like to have (and that's the most important). However, I have also checked the help to find in the most popular questions how to nest the tags. There was no such a question here (http://www.evernote.com/about/kb/search ... ledge+Base) and the most similar topic was "An Introduction to Tags" (http://www.evernote.com/about/kb/articl ... gs?lang=en). Unfortunately, the picture in that article doesn't look like what I see when I log in to my Evernote account. I see tags at the left of the window. I don't see any picture in that article describing how to nest tags. So - how to nest tags? I don't quite understand the terms which you use. Is it something like default hierarchy which looks like: -> stack -> -> notebook -> -> -> note I don't see any need to have more than one, default stack. In other words, please, tell me how to nest tags as shown on this picture (http://i.imgur.com/TlJKX.png) in this thread (viewtopic.php?f=56&t=24233&p=104002&hilit=hierarchical#p104002). I couldn't find the answer here (http://www.evernote.com/about/kb/search ... ledge+Base). Regards!