Modify menu

Command	Windows	Macintosh
Tween Instances	Control + Alt + Shift + T	Command+Option+Shift+T
Image Object	Control + E	Command + E
Exit Image Edit	Control + Shift + D	Command + Shift + D
Join	Control + J	Command + J
Split	Control + Shift + J	Command + Shift + J
Merge Images	Control + Shift + Alt + Z	Command+Shift+Option+Z
Group	Control + G	Command + G
Mask to Image	Control + Shift + G	Command + Shift + G
Ungroup	Control + U	Command + U

 
Transform submenu

Command	Windows	Macintosh
Free Transform	Control + T	Command + T
Numeric Transform	Control + Shift + T	Command + Shift + T
Rotate 90 degrees CW	Control + 9	Command + 9
Rotate 90 degrees CCW	Control + 7	Command + 7

 
Arrange submenu

Command	Windows	Macintosh
Bring to Front	Control + F	Command + F
Bring Forward	Control + Shift + F	Command + Shift + F
Send Backward	Control + Shift + B	Command + Shift + B
Send to Back	Control + B	Command + B

 
Align submenu

Command	Windows	Macintosh
Left	Control + Alt +1	Command + Option +1
Center Vertical	Control + Alt +2	Command + Option +2
Right	Control + Alt +3	Command + Option +3
Top	Control + Alt +4	Command + Option +4
Center Horizontal	Control + Alt +5	Command + Option +5
Bottom	Control + Alt +6	Command + Option +6
Distribute Widths	Control + Alt +7	Command + Option +7
Distribute Heights	Control + Alt +9	Command + Option +9