You can see the history of each comment if the current page is using the Editable Comments Plugin.
When you click on the pencil icon for a given comment, the plugin will fetch all the previous versions of that comment and display them in a modal window.
Contents
Fetch comment history
Comment history modal
Get the comment from the appendable data
The plugin fetches a data identifier handle for the comment you want to browse.
The parameter v corresponds to the version of the structured data being fetched. It starts at version 0 and continues until all the versions (except the current version) have been fetched.
Drop the structured data handle
The plugin drops the structured data handle of the comment.