{
  "function": "atan2",
  "description": "Returns the inverse tangent of dy/dx by using the signs of the two arguments to determine the quadrant of the result.",
  "arguments": [ {"arg":"dy","description":"y coordinate difference"},
                 {"arg":"dx","description":"x coordinate difference"}],
  "examples": [ { "expression":"atan2(1.0, 1.732)", "returns":"0.523611477769969"}]
}