[Shortcut] SHIFT + SPACE [What it does] Play the entire selection repeatedly (or the entire track if no selection) until stopped. [Button] 
Loop-Play
P a u s e
P l a y o r S t o p
L o o p - P l a y
S k i p t o S t a r t
S k i p t o E n d
R e c o r d
A p p e n d - R e c o r d