"a flowing, poetic manner of expression." (about Arabic)

I read this description in a beginner's book about Arabic. I wonder if someone could elaborate about this, give their opinion about it, or provide an example. Incidentally: aleph, ba, daal, ziin, ziil, and so on. And then seperate from all of them 'hamza'. Those have some resemblence to the fact at least. 

 

Perhaps I should ask this as a question.