/// <summary>
/// </summary>
/// <param name="document"></param>
/// <returns></returns>
public static int GetDefaultFontSize(this WordprocessingDocument document)
{
if (document == null)
{
throw new ArgumentNullException("document");
}
var rPr = document.GetRunPropertiesBaseStyle();
return(rPr.FontSize != null?int.Parse(rPr.FontSize.Val) : 20);
}