9. The method of claim 2 , wherein said computer is further programmed to execute, and does execute, the following actions: selecting each of said matrix cells to be rectangularity shaped.
9. The method of claim 2 , wherein said computer is further programmed to execute, and does execute, the following actions: selecting each of said matrix cells to be rectangularity shaped. 10. The method of claim 9 , wherein said computer is further programmed to execute, and does execute, the following actions: selecting at least two of said matrix cells to have different sizes.