private Category CreateNewLineType(Document doc)
        {
            Category lineCategory = doc.Settings.Categories.get_Item(BuiltInCategory.OST_Lines);
            Category newCategory = doc.Settings.Categories.NewSubcategory(lineCategory, "newLine");
            Color newColor = new Color(255,255,0);
            newCategory.LineColor = newColor;
            return newCategory;
        }