I am using version 2.8 of Blender.
The following shortcuts do not work on the dope sheet.
Is there a solution?
Ctrl + Shift → : next marker
Ctrl + Shift ← : previous marker
Shift + ↑ 10 : frames forward
Shift + ↓ 10 : frames back
Try Alt + mouse scroller
PS: I'm trying to fix my screencast keys but I was pressing Alt + mouse scroller