The explanation on the RTL MARK is taken from the OPEN BOX right of  
the (<Arabic>) comment. Right of the (<Hebrew>) comment different  
characters can appear: {, m, OPEN BOX (which here actually is TAB!).  
These boxes or characters do not change size by the same amount (or  
not at all?) when I invoke text-scale-decrease or text-scale-increase.  
You can also see the boxes in the Myanmar texts.


--
Greetings

   Pete

Only useless documentation transcends the first two laws.
				– Arnold's Third Law of Documentation