a minimal support for right-to-left text can be added by the following algorithm:
a. create a mirror image of each glyph of each font used.
b. create the document as usual, with the mirrored font.
c. create a mirror image of each page before inserting it into the document.

This algorithm is not perfect - it will also invert ltr text, e.g., the number "270" will become "072". However, it is a very simple algorithm that will make most of the text readable, so the utility/cost ratio is quite high.

That's quite clever!

however, this will also reverse every left or right related css propert, like, margin, padding, border, position etc...