The Text interface represents the textual content of Element or Attr. If an element has no markup within its content, it has a single child implementing Text that contains the element's text. However, if the element contains markup, it is parsed into information items and Text nodes that form its children.
The Coordinates.accuracy read-only property is a strictly positive double representing the accuracy, with a 95% confidence level, of the Coordinates.latitude and Coordinates.longitude properties expressed in meters.
The Coordinates.altitudeAccuracy read-only property is a strictly positive double representing the accuracy, with a 95% confidence level, of the altitude expressed in meters. This value is null if the implementation doesn't support measuring altitude.
The Coordinates.heading read-only property is a double representing the direction in which the device is traveling. This value, specified in degrees, indicates how far off from heading due north the device is. Zero degrees represents true true north, and the direction is determined clockwise (which means that east is 90 degrees and west is 270 degrees). If Coordinates.speed is 0, heading is NaN. If the device is not able to provide heading information, this value is null.