TapClick on an icon to see the item(s) at that location. TapClick on an item to toggle it between delivered and undelivered. If two or more addresses are very close together, their items will be grouped under one icon.

Pinch with two fingersScroll with a mouse to zoom in and out. You can also double-tapclick to zoom in. Drag with one fingerthe mouse to move (pan) the map.
If you prefer, tapclick and to zoom in and out.
Drag on to rotate and tilt the map. Dragging left and right rotates, up and down tilts. You can also rotate with two fingers by twisting them around each other, or with a keyboard by holding Ctrl and dragging your fingerthe mouse.

TapClick my_location or to show your current location on the map as a blue dot. The map will follow the dot until you zoom or move the map. If the dot goes off the edge of the map, press the button again to re-center the map. Pressing the button when the dot is visible will hide the dot and stop the map from following your location.

directions will open your default map/navigation app with the item location set as the destination. This is useful if you're having trouble finding the location.