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
Cuneiform (Unicode block) in June 2004. The base character inventory is derived from the list of Ur III signs compiled by the Cuneiform Digital Library Initiative of UCLA based on the inventories of Miguel Civil, Rykle Borger (2003), and Robert Englund. Rather than opting for a direct ordering by glyph shape and complexity, according to the numbering of an existing catalogue, the Unicode order of glyphs was based on the Latin alphabetic order of their 'main' Sumerian transliteration as a practical approximation. Of the 907 signs listed by Borger (2003), some 200 have no encoding at a single code point. Conversely, a number