private static void InsertBookmarks(Document doc)
{
DocumentBuilder builder = new DocumentBuilder(doc);
builder.StartBookmark("My Bookmark");
builder.Writeln("Text inside a bookmark.");
builder.StartBookmark("Nested Bookmark");
builder.Writeln("Text inside a NestedBookmark.");
builder.EndBookmark("Nested Bookmark");
builder.Writeln("Text after Nested Bookmark.");
builder.EndBookmark("My Bookmark");
builder.StartBookmark("Bookmark_WithoutWhiteSpaces");
builder.Writeln("Text inside a NestedBookmark.");
builder.EndBookmark("Bookmark_WithoutWhiteSpaces");
}