An electronic device can be enhanced to enable its user to navigate about and view, on the device's display, different portions of a page or document while the device remains in a zoomed-in mode that magnifies the portion of the document that the device is currently displaying. Upon entering the zoomed-in mode, the device can magnify a portion of the document on the display. While in this mode, the device can react to user-produced gestures in a manner that is different to the manner in which the device would react to the same gestures otherwise. Responsive to user-produced gestures while in the zoomed-in mode, the device can navigate to other portions of the document while remaining in the zoomed-in mode, so that those other portions are also presented magnified. The device's user is not forced to first zoom-out from one document portion in order to zoom-in on another document portion.