Sitecore.Data.Database db = Sitecore.Configuration.Factory.GetDatabase("master");Process(db.GetItem("/sitecore/content/home"));private void Process(Sitecore.Data.Items.Item item){ Sitecore.Data.Fields.Field field = item.Fields[Sitecore.FieldIDs.LayoutField]; if (! field.ContainsStandardValue) {    item.Editing.BeginEdit();    field.Reset();    item.Editing.EndEdit();   } foreach (Sitecore.Data.Items.Item child in item.Children) {  Process(child); }}