[XeTeX] Texworks

[Ali Mesforush]

Hello everybody,

I have a problem in Texworks.
I can write from right to left by  pressing right Ctrl+Shift, but the problem is that, when I finish my works and I save an quit 
texworkx, in the next file loading, every things  is in the original form, i.e all my persian lines are from left to right. In fact I have lost all things.
I want to know that how can I save the setting?

Regrads
/Ali