Specifies how high the user can look. Valid values are from -90 to 90 (default: 90).
Specifies how far left the user can look. Valid values are from 0 to 360 (default: 0).
Specifies how low the user can look. Valid values are from -90 to 90 (default: -90).
Specifies how far right the user can look. Valid values are from 0 to 360 (default: 360).