Cuneiform to left-to-right in horizontal rows (rotating all of the pictographs 90° counter-clockwise in the process) and a new wedge-tipped stylus was introduced which was pushed into the clay, producing wedge-shaped ("cuneiform") signs; these two developments made writing quicker and easier. By adjusting the relative position of the tablet to the stylus, the writer could use a single tool to make a variety of impressions. Cuneiform tablets could be fired in kilns to bake them hard, and so provide a permanent record, or they could be left moist and recycled, if permanence was not needed. Many of the clay tablets found
Sa (cuneiform) Sa (cuneiform) The cuneiform sa sign is a less common-use sign of the "Epic of Gilgamesh", the 1350 BC Amarna letters, and other cuneiform texts. It also has a sumerogrammic usage for SA in the "Epic of Gilgamesh". The structure of the cuneiform sign is similar to, Ir (cuneiform), . The "sa" sign has the syllabic usage for "sa", and a sumerogram usage for "SA". Alphabetically "sa" can be used for "s" ("s" can be interchanged with any "z"); and "sa" can be used for "a". In Akkadian, all 4 vowels, "a, e, i, u" are interchangeable with each other.