z
Edit > Undo (also Ctrl+z/+z)
Shift
Z
Edit > Redo
g
Edit > Repeat
G
Repeat command at mouse position
Ctrl
d
Edit > Duplicate
Ctrl+Shift
D
Edit > Duplicate Special
Edit > Duplicate with Transform
Edit > Group
p
Edit > Parent
P
Edit > Unparent
Ctrl (or )
x
Edit > Cut
c
Edit > Copy
v
Edit > Paste
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