The most ordinary number is four, which is sometimes reduced to three or even two.

The direction of the wedges is uniformly either perpendicular or horizontal, except of course in the case of the double wedge or arrow-head, where the component elements are placed obliquely.
The arrow-head has but one position, the perpendicular, with the angle facing towards the left hand.

The only diagonal sign used is a simple wedge, placed obliquely with the point towards the right, which is a mere mark of separation between the words.
The direction of the writing was, as with the Arian nations generally, from left to right.

Words were frequently divided, and part carried on to the next line.

The characters were inscribed between straight lines drawn from end to end of the tablet on which they were written.