I don’t presume the difficulty in changing the interface or unnecessarily impacting the simplicity of it for others (I like Tabbles because the interface is simple to use and find items). A very clever application. 
I use it primarily for web URLs, some personal files, and almost no email (just as test and input here).  Since the recent change to allow renaming URL/Email entries, it alleviated my initial reluctance to use Tabbles.  That said, I suggest a description or comment be implemented the same way, a field on the ‘tag’ dialog for all tagged entries. A menu option like “rename” to “comment” – or “rename/comment” to bring up the same dialog?
Personally, I’d like the “comment” displayed under the entry name, above the URL or FOLDER in the shown entry (not a hover or menu|more step)…searchable like the other fields in the main query, not specific to that field. 

• Displayed in record only when there is something in that field? (might slow it down).
• Otherwise as someone suggested, a toggle to show comments? So no waste of space for those not wanting it.
• Maybe a system comment “tag” or indicator when there is something entered in to that field? (I’d like to filter a list of commented entries, regardless of comment displayed or not.)

This is a luxury to me, I simply am comparing it’s use to document management system where I profiled documents and my desire to eliminate the need for an exhaustive number of tags.  I’d hate to see the application grow too complex, defeats the purpose. 
P.S. I found another clever tool I use in conjunction with Tabbles – TiddlyWiki (same concept, but single file HTML for notes/tags.  I tag those in Tabbles since those are files (or URL)…it’s established, free, and simple (notes float in/out), and accessible (self-contained file). I use it instead of Onenote or Evernote because it doesn’t require an app and easier to organize.  http://tiddlywiki.com

• This reply was modified 6 years, 6 months ago by Andrea.