Timeout Notification
Beside Watch and Notify some function have an additional
timoeout notification function. If a timeout occurs or a trigger levels is
exceeded 3d Traceroute will play a customizable sound, send notification mails,
become visible and pop into the foreground.
On some windows the
symbol indicates a tool
that has notification capability. So simply click on it and the settings dialog appears:

This allows defining a alert trigger level (timeout or time limit) and define
the action.