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Once a comment is uploaded to Bugzilla the <new comment> tag is changed to the comment author label and the comment cannot be modified anymore. Instead, the Reply to Comment option becomes available. Right-click the comment to select this option.
The Comments Toolbar provides the following functions:
- Arrange comments by creation date. Use the Oldest First and Newest First buttons.
- View comments in a thread. Click the Threaded Comments View button to see the thread structure.