[XeTeX] various questions about ArabXeTeX

[Mohammad Gharaibeh]

Hi all,

I have some questions about ArabXeTeX again.

First question is about the special ligatur of the word 
allah. I use the font scheherazade, for I need some 
features which are not available in other fonts. But like 
it is mentioned in the description of ArabXeTeX the design 
of allah is suboptimal. Whereas the design of the glyph 
used from the font Traditional Arabic is better.
Is there a possibility of using the font traditional 
arabic only for the name of god, while the whole text is 
written in scheherazade?

Second question is about Transliteration:
Is there a short command for transliteration like it is 
availible for arabic (\textarab{}). I couldn't find 
something like this for transliteration in the 
description.

Thanks!!!

Mohammad