Need HIG for application media keyboard shortcuts
Various apps seem to be using different / no shortcuts for the following actions:
- Play
- Pause
- Seek forward
- Seek backward
- Volume Up
- Volume Down
- Previous Track (*)
- Next Track (*)
* - Alt + Left
and Alt + Right
from standard navigation keyboard shortcuts can be used here, I guess.
Reference: https://developer.gnome.org/hig/stable/keyboard-input.html.en