Keyboard shortcuts:

Space - Play/Pause
Arrow Right - Forward 1 second
Arrow Left - Rewind 1 second
Plus (+) - Zoom in on the timeline
Minus (-) - Zoom out on the timeline
Ctrl/Cmd + S - Save interactions
A - Launch interaction type list
E - Activate bulk editing
Ctrl/Cmd + A - Select/Deselect interactions
C - Copy selected interactions
D - Download selected interactions
X - Delete selected interactions
I - Launch interaction import form
P - Paste copied interactions
U - Launch the interaction upload form