Amazin, thanks a lot Azelor!

And what about line shape? In the guide which I'm following the artist use a high dimension of a line shape to draw buildings (which is different, he explains, by drawing them with the square shape, 'cause with the line shape you can easily rotate "buildings"). The problem is that in my shape command, in CS6, I have just square, circle, polygon, personal shape and line that allow you to create just arrow...I don't know why...