Canon PIXMA MG4200 Series On-Screen Manual page 370

(Whole Image View)
While in the details view, fits the preview to the area size.
(Reduce/Enlarge)
Click (Reduce) or (Enlarge) to reduce or enlarge the display size. You can also freely change
the display size by dragging the slider.
Note
See "Registering People from the Details
preview.
See "Create/Edit PDF File
When you display a video in the details view, the video playback panel appears and you can use
(Stop), (Playback) /
(Unmute).
View" for how to register people from the details view of
View" for the details view of PDF files.
(Pause), (Frame Backward), (Frame Advance) and (Mute) /
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