You can adjust the scale of the map in the iOS Client.
Simply pinch your fingers on the screen (to zoom out) or move them apart in a sweeping motion (to zoom in).
If some objects are too close to each other on the map and cannot be displayed at the current scale without overlapping, they are replaced by a group icon (an Object Group icon).
Note
The upper-left corner of the group indicates the number of objects in the group.
A list of objects in a group is displayed when you click the group icon.
After you select an object, a list of actions is presented.
Overview
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