"To get directly to the point (finally ;), the tag we're using in this script is called, simply, "bdo." It actually has more options than the "one" we're going to use, but the "dir" attribute is essential in allowing this script do what it does very simply (and actually the only required attribute). The dir is short for direction and can have a value of either "ltr" (left to right) or "rtl" (right to left)"