Formatting Control Characters

[samira forooghi]

there is a problem in the case of Arabic and any other bidi text, there are situations (especially when using weak characters) where an implicit bidirectional ordering is insufficient to produce understandable text. To deal with these cases, a set of directional formatting control characters are defined to control the ordering of characters when rendered you can see it in http://www.microsoft.com/middleeast/msdn/Control.aspx\[^\] have any body information or sample code for this problem?