My native language is not Arabic. My native language is Turkish.
But Holy Quran is Arabic. We want to use your RichTextBox control in our new web site.
This site will include most comprehensive studies on the Holy Quran.
A lot of people will enter this site.  However, RTL support needed for it.
If you tell time of RTL support of RadRichTextBox and if it is close, we want to use your control.
Waiting for your reply as soon as possible.

Hi Lutfi,

Right to left is still not supported and is not scheduled officially. You can vote for this feature and track the development using our Public Issue-Tracking System at  http://www.telerik.com/support/pits.aspx#/public/silverlight/3296.
Chances are that we would not be able to implement RTL for Q1 2011, but we will have it in mind with regard to our development plans for future releases.

Regards,
Iva
the Telerik team