In addition to altering the tempo when the song switches from e.g. the intro into a verse, it is also very handy to have a clear indication of more general changes or special events in the song. For this purpose you can also add Tags to the song. These Tags are short text messages you can add at any given moment that will be displayed whenever the song playhead passes by that Tag.
To add a Tag middle-click on the song ruler (just below the Timeline) and a window will pop up that allows you to add text for any bar.
Once you are done you will see a small blue T in the song ruler for every Tag
you have entered. Middle-click anywhere on the song ruler to edit the tags.