Oh... you have got it reversed at the beginning...
I will try to explain:
The difference writing in rtl direction is that the cursor goes from right to left. If you write a letter, the cursor than be at the left side of it (in English it will be the other way around - the cursor will be in the right).
If for example you write a sentence in Hebrew, and add a comma at the end, the comma should be in the left side of the sentence (As is the case in the edite mode of the item):

However, it will actually be in the right side of it if you don’t use rtl writing direction (as is the case when exiting edit mode):

The following link tries to explain how to embed rtl capabilities in an application, hope it can help:
http://www.danielmoth.com/Blog/2005/03/rtl-problem.html
Thanks.