Overview Bar and Markers
The Overview Bar is closely related to the transport. It is a large slider indicating the current transport position. The slider thumb can be moved using the mouse. Double clicking anywhere starts the transport from that position, clicking the thumb stops it. The overview bar also shows the markers.
The most recent transport start position appears in the upper half as a green triangle. If you click it the transport moves back to that position, double clicking it starts the transport at that position.
The current editor view area is indicated by a thin line. It's only visible while the editors are scrolling horizontally.
Markers are used to name certain parts of a song (for instance Intro, Verse 1, Verse 2, Solo, Verse 3). Navigating through a song becomes significantly easier using markers. The position indicator menu features an Add Marker option which adds a marker at the current transport position. If there's a marker at the current position a Delete Marker option is presented instead.
Alternatively markers can be added by rightclicking the overview bar. Most editors allow for adding markers by right-clicking the time grid-area (where the needle handle lives).
An easy way to add markers "on-the-fly" is to press Ctrl+M (Windows) / Option-M (Mac) at the appropriate times while the song is playing. This takes the grid snap setting into account, so accurately adding markers on-the fly is easy when using a grid spacing of one bar while the "Snap" button is engaged.
The markers appearing on the overview bar can be left-clicked to jump to the corresponding transport position. They can be right-clicked to delete, rename, quantize to the grid, move it to the current transport position, or type a new position. Renaming can also be done by double clicking the marker. Markers can be dragged to a new position.