var instance = new Vintasoft.Imaging.Annotation.UI.WebAnnotationVisualToolJS();

var value; // Type: boolean
value = instance.get_IsAnnotationBoundingRectEnabled();

function get_IsAnnotationBoundingRectEnabled() : boolean;

True - annotation can be built only in region specified by the AnnotationBoundingRect property; False - annotation can be built everywhere.
Default value is false.