To add a comment to a single packet, go to Edit and then Packet Comment. A dialog box will be displayed, where you can enter your comment. Once entered, Wireshark will append a note with bright green coloring at the top of the frame, as shown in the following screenshot:

Once you have added comments to either the entire capture or a single packet, you'll want to save them, and then at some point, go back in and reference the notes. The following section reviews how we can take a look at the comments and how to preserve our remarks.