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To delete a marker, click on the triple dot button (1) and from the drop-down menu select "Markers" (2):
%20-%20removing%20markers.png?version=1&modificationDate=1521558851586&cacheVersion=1&api=v2)
Find a marker that needs removal and then click a triple dot "Action" button right to it:
%20-%20removing%20markers%202.png?version=1&modificationDate=1521559513310&cacheVersion=1&api=v2&height=400)
After selecting "Delete" you will be presented with final confirmation prompt:
%20-%20removing%20markers%203.png?version=1&modificationDate=1521559624567&cacheVersion=1&api=v2&height=150)
Action is irreversible