[itsme]

Pls take a look at the attached screenshot.
In 'Display Settings - System Settings' there are three checkboxes:
1. Dim the Navigation Bar
If this is ON (checked) the three symbols on the Navigation Bar disappear after some seconds, the Navigation Bar turns completely black. Nevertheless the buttons stay usable and react instantly when tapped.
This setting is valid for all MS views.
I'm always using 'Dim the Navigation Bar' OFF, I prefer seeing the buttons all the time
2. Hide the Navigation Bar
If this is ON, the Navigation Bar disappears as soon as a song is opened. A swype from the top of the screen makes it visible and usable for some seconds, the Notfication Bar appears together with the Navigation Bar, even if it is switched OFF. In the library views, this setting has no effect.
I'm always using 'Hide the Navigation Bar' OFF, I prefer seeing the buttons all the time
3. Fullscreen Mode
If this is ON, the Notification Bar is not shown as long as MS is open
I'm always using 'Fullscreen Mode' ON, in MS I want to use as many of the tablet's screen as possible for displaying my scores.
IMHO it is clearly explained in the manual, the only thing that is missing there is, that 'Hide the Navigation Bar' is only effective in case a song is opened.