Portal Themes and Right-to-Left (RTL) Languages 
Right-to-left languages, such as Hebrew and Arabic, require different stylesheets and images than the left-to-right languages (LTR).
Due to the fact that generating stylesheets for RTL languages takes some time, when you create a new theme, only the stylesheets for the LTR languages are generated in the standard setting. You configure the generation of stylesheets in NetWeaver Administrator.
The following functions are provided:
Uploading Images for Right-to-Left Languages
Caution
Stylesheets for RTL languages can only be generated for the Unified Rendering stylesheets of a theme part.
Caution
iViews on a page can be displayed with either RTL or LTR stylesheets only. A mixed display only works if an iView is isolated on a page.
In addition, the iView property Forced Request Languages overwrites the personalized portal language that was set. This property has an effect on the stylesheets that are generated for the overall page.