AWA - Can I write points numbered?

Hello,

The sample questions that I had seen so far have flaws and the answers are about identifying and analyzing that flaw. Is this the GMAT pattern ? Will there also questions that that have correct evidence and conclusion in GMAT?

My second doubt is about numbering my thoughts. I have a habit of communicating the outline and the number of + and -. Then listing the positive (+) points in sequence of first (1), second(2) e.t.c. This followed by the weak points (-) in sequence. The sequence is numbered. Is this acceptable for GMAT?

Thirdly, Will Spelling mistakes reduce the score.

Lastly, I am concerned about the computer software that grades my analysis. I write my viewpoint. If there is a question on a proposal to have a luxury spa in a residential suburb, the answer could include my thought on market segmentation, the culture of the people and the competition in the area. Another person may have totally different points. I can't imagine how a software could grade an analysis. My concern is that the software should not lower grade of my analysis.

May I request the experts and my fellow study colleagues to share their thoughts.

Thanks,
Rajesh