private void AddDefaultProperties(Part part, Style style)
{
// find the part's default properties
ArrayList defaultProps = new ArrayList();
DClass cls = (DClass) Voc.DClasses[part.Class];
foreach (DProperty prop in cls.Children)
{
if (prop.IsDefaultProperty && !part.HasProperty(prop.Identifier, style))
style.AddProperty(prop.DefaultProperty, part);
}
}