Keep primary controls in the same position
as the user switches between views
When multiple views of an object are provided,
as described in the guideline on Incremental and Discrete Function Disclosure,
keep the primary controls in the same position on the screen as the user
switches between the views. For example, the RealCD provides a base function
view and a full-function view. The player controls remain in the same position
as the user switches between the two views.
Also, make it easy for the user to move a view back onto the screen if a portion of it appears off of the screen. If the RealCD’s base function view is positioned on the left side of the screen a portion of the full-function view may appear off of the screen. However, the user can easily drag the view back onto the screen. Do not move the view in an attempt to keep it on the screen. Moving the view would cause the controls to move, making it more difficult for the user to work with the object.