Free Rotate
You can use the Layout | Arrange | Free Rotate command or the 
button to rotate an object with the mouse. Select the object then click the Layout | Arrange | Free Rotate command. The pointer will change to show 
next to it to indicate that the program is in rotate mode. To rotate an object, click on the screen, hold the left mouse button, and move the mouse. As the object is rotated the degrees of rotation are indicated in the status bar and the object's outline is displayed in the rotated view with a dashed line. To fix the position of the rotated object, release the mouse button.
Clear Rotation
To clear rotation, use Home | Selection | Transform.
Exit Rotate Mode
Press the ESC on your keyboard or click the Select command to exit rotate mode.