Objects in a movie clip with Alpha set to 0 are active, even though they are invisible. For example, a button in a movie clip with Alpha property set to 0 can still be clicked. Visibility specifies whether the movie clip is visible. Objects in a movie clip with Visibility set to false are disabled. For example, a button in a movie clip with the Visibility property set to false can not be clicked.
Rotation specifies a movie clip's rotation.
The value is in degrees. Using the Expression Editor An Expression Editor that helps you formulate the exact contents of certain statement parameters can be opened from the Actions tab. Simply type the literal value into the field. If you need to create an expression, click the button next to the field and choose Expression Editor. Double-click the operators and functions you want to use.