Specifies the point within the Icon that is anchored to the "Point" specified within the Placemark.
KML Element Attribute
hotspot Element Attribute
kml_hotspot_x
<hotSpot @x>
kml_hotspot_y
<hotSpot @y>
kml_hotspot_xunits
<hotSpot @xunits>
kml_hotspot_yunits
<hotSpot @yunits>