Here is a sample screenshot of what it looks like (see attached).
A big benefit for me is that, quite often the original uploader of the torrent has given the file name something vague, and I have to rename the torrent in order to correctly identify what it is within my collection of my client. Using the comment function within BiglyBT allows me to reflect the original name which was given the torrent by the uploader - thus I maintain a trail of what it is on the website and what it is within my client collection, and the URL then appears at the bottom of the popup window and I just click that link and it takes me to the actual page within the website here.
You may notice that there is a second URL which is path'd locally to one of my computer drives. I actually save a copy of every URL I download - including picture files, in case the torrent becomes banned and removed from the site. This allows me to archive those files so if I want to go back and attempt to make the same torrent file and upload it back to the site, I can do that.
2019-08-05 (1).png