How to add comments?

I’m trying to figure out how to add comments to a document (or better yet, a stretch of text). The DTOP guide says to click on the “comment” icon in the toolbar (but there isn’t one, as far as I can tell).

I’ve tried adding spotlight comments to the document, but they don’t show up in the column field when viewing my files.

Any ideas? Supposedly you can also highlight text and select Insert>Comment, but again, I can’t find that command anywhere.

Any help would be much appreciated! Have I found a bug, or is this just user error?

Please start a Support Ticket. Thanks.