After satellite acquisition the map page automatically centers the map around the current location, ie. gives a "moving map", shifting the map as the loaction changes. If the user temporarily centers the map elsewhere by using the 4-way button to push the cursor away from the current center and off the edge of the currently displayed area, the moving map mode is disabled.
How does one re-enable the moving map mode so that the map is again automatically centered on current location? Have I missed something in the manual?