For right-to-left languages such as Arabic or Hebrew, the viewer interface itself can be mirrored. This example enables RTL mode for the viewer.

Enabling RTL. Set the global viewer option before the control is created:
StiOptions.Viewer.RightToLeft = StiRightToLeftType.Yes;
InitializeComponent();
With RTL enabled, the toolbar, panels and scrollbars of the viewer are laid out right-to-left, which — combined with an RTL report template and interface localization — gives a fully localized experience for right-to-left audiences.
На скриншоте ниже Вы можете увидеть результат выполнения данного кода:

Using the Right-To-Left Mode in the Viewer