/// <summary>
/// Create a new blank spreadsheet document.
/// </summary>
public void New()
{
LoadBlankContent();
DocumentConfigurations2 = new DocumentConfiguration2();
DocumentManifest = new DocumentManifest();
DocumentManifest.New();
DocumentMetadata = new DocumentMetadata(this);
DocumentMetadata.New();
DocumentPictures = new DocumentPictureCollection();
DocumentSetting = new DocumentSetting();
DocumentSetting.New();
DocumentStyles = new DocumentStyles();
DocumentStyles.New();
ReadCommonStyles();
DocumentThumbnails = new DocumentPictureCollection();
}