Working With Notes
You can add a textual note to every HTTP request/response. This feature is accessible via the inspector view or by pressing the return key.
Record a transaction - Set Proxy.app in listening mode. Select a recorded.
Add a note - In the inspector view simply type your note. Now you note is recorded. Keep in mind that you can start typing your notes right away by pressing the return key.
Filter based on notes - You can view only records with notes by selecting the Notes filter from the sidebar.