defualt directon of tinymce

how i can change defualt directon of tinymce.
I want it be in RTL (right to left) mode but it start in LTR(left to right) mode.

i see this help here:
http://wiki.moxiecode.com/index.php/Tin … ctionality
but i do not understood exactly where i need to put it and Which file in folder.

Quote · 4 May 2010
 
 
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