In the 'weave' specification above 2/2 is mentioned. Just for information, those numbers are determined by the number of filling (weft, or side to side) threads the warp (longwise) threads alternately pass over and under. In this case they pass over 2 and under 2. Suppose that the first warp thread starts by passing alternately over 2, under 2, over two, under 2, etc.(called 'up' and 'down') The thread next to it starts by passing over 1 and under 2, then progresses 2 up, 2 down. This produces a 45 degree twill. Steeper and shallower twills are easily produced by simply changing the draw, as 3/2 or 2/3.