Turn/Do not Turn (Ctrl+T)

Use this command to Turn ON / OFF image rotation mode.
To rotate the image about the horizontal or the vertical axis, move the thumb on the scroll bars or use the arrow keys on the keyboard.
Or, use
“Shift + Mouse Scroll Button Up and Down” for horizontal rotation of model
“Ctrl + Mouse Scroll Button Up and Down” for vertical rotation of model
Note:
While NOT in rotate mode (Do not turn): use:
“Shift + Mouse Scroll Button Up and Down” for horizontal translation of model
“Ctrl + Mouse Scroll Button Up and Down” for vertical translation of model