Ruler
The ruler shows the timeline and display format of the project, the project tempo grid.
The ruler is located above the waveform display. It is always shown.
![](../../trans_picts/sample_editor_window/ruler.png)
When the Definition section is open, an additional ruler is shown below the project tempo grid. It displays the musical structure of the audio file, the audio tempo grid.
![](../../trans_picts/sample_editor_window/ruler_additional.png)