The element setting “Cluster markers” affects the initial zoom level for maps with OpenStreetMap. If the “Cluster markers” setting is selected, the map searches for a suitable zoom level when the page is initially loaded so that all markers and bundles are visible in the map section when the page loads.
The number of markers is displayed in a cluster. Clicking on the number will break up the cluster into individual markers.
The zoom level and map section also change automatically when the group of markers changes.