"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)"