The AllowZoom property enables zoom support through keyboard
and mouse input (Ctrl+Plus, Ctrl+Minus, Ctrl+Mouse Wheel). With this
enabled, end users can adjust the document's scaling factor directly.
When disabled, zooming is locked at 100%, ensuring that the page is
always displayed at its natural size. This can be useful in
applications where layout fidelity is important and user scaling could
cause unexpected clipping or misalignment.
The application can change the zoom level for the current page
using the ZoomLevel property regardless of this property value.