Spelling of "Allah"

[Tanweer]

In the Quran copies printed in South Asia, Allah is spelled with a “vertical fatha” on top of “Lam tashdeed.” In book 1 handout, Allah is spelled in this manner. See, for example: page 14.

But in middle-eastern Quran, Allah is spelled without this vertical fatha. In the English key of Book 1, Lesson 6, Page 16, Allah is spelled without this vertical fatha.

In the main Book 1, Lesson 6, page 38, words like Alhamdulillah is printed, but it is not clear in my book whether a vertical fatha is there or not.

Can someone knowledgeable please explain this two spelling rules?

[irf2k]

Waalaikum Assalaam,

In the first DVD of the Selections from the Glorious Qur'an, Shayk Abdur Rahim explains how the scripts evolved.
This DVD can be watched from this link:
http://www.lqtoronto.com/videos.html
It is an informative video.
Wasalam