Defines a closed line string for the Outer Boundary of the Polygon. Optionally, an Inner Boundary can also be used to create holes in the Polygon. A Polygon can contain multiple Inner Boundary elements.

The grids (tupples) have a small popup menu where you can delete the selected row(s) or change the Altitude of the selected row(s). Just right the grid left corner to select all rows or left-click a cell. You can use Shift+Click or CTRL+Click to select multiple rows.

*	Indicates an empty row ready to insert coordinates.
	Add a new Inner Boundary
	Expand/collapse the selected Inner Boundary
	Delete the selected Inner Boundary

Note: In Google Earth, a Polygon with an Altitude mode of clampToGround follows the great circle.

Extrude

Specifies whether to connect the Linear Ring (outer boundary or inner boundary) to the ground. To extrude this geometry, the Altitude mode must be either relativeToGround or absolute, and the Altitude component within the coordinates rows must be greater than 0 (in the air). Only the vertices of the Linear Ring are extruded, not the center of the geometry. The vertices are extruded toward the center of the Earth's sphere.

Tessellate

Specifies whether to allow the Linear Ring to follow the terrain. To enable tessellation, the value for Altitude mode must be clampToGround. Very large Linear Rings should enable tessellation so that they follow the curvature of the earth otherwise they may go underground and be hidden.

Altitude mode

Specifies how the Altitude components in the coordinates element are interpreted. Possible values:

• clampToGround » Indicates to ignore an altitude specification.
• relativeToGround » Sets the altitude of the element relative to the actual ground elevation of a particular location. For example, if the ground elevation of a location is exactly at sea level and the altitude for a point is set to 10 meters, then the elevation for the icon of a point placemark elevation is 10 meters with this mode. However if the same coordinate is set over a location where the ground elevation is 11 meters above sea level, then the elevation of the coordinate is 21 meters. A typical use of this mode is for placing telephone poles or a ski lift.
• absolute » Sets the altitude of the coordinate relative to sea level regardless of the actual elevation of the terrain beneath the element. For example, if you set the altitude of a coordinate to 11 meters with an absolute altitude mode, the icon of a point placemark will appear to be at ground level if the terrain beneath is also 11 meters above sea level. If the terrain is 4 meters above sea level, the placemark will appear elevated above the terrain by 7 meters. A typical use of this mode is for aircraft placement.

Coordinates (Longitude and Latitude are required)

Four or more rows, each consisting of floating point values for longitude, latitude, and altitude. The altitude component is optional. The last coordinate must be the same as the first coordinate. Coordinates are expressed in decimal degrees only.