Where is the Playback screen explained?

Dorico
1

Screen Shot 2023-01-27 at 4.04.55 PM
Screen Shot 2023-01-27 at 4.04.55 PM1920×985 164 KB

In particular, where is “01 - Halion Sonic SE”?
In general, where is all this explained?
I haven’t need this until now.

2

01 is reserved for Dorico beep.

The playback screen is explained on the online manual.

3

Thank you. That little bit of help you gave me got me over a wearisome hill at the end of a long day.