Clerical script characters are often “flat” in appearance, being wider than the preceding seal script and the modern standard script, both of which tend to be taller than they are wide; some versions of clerical are square, and others are wider. Compared with the preceding seal script, forms are strikingly rectilinear; however, some curvature and some seal script influence often remains. Seal script tended towards uniformity of stroke width, but clerical script gave the brush freer rein, returning to the variations in width seen in early Zhōu brushwork. Most noticeable is the dramatically flared tail of one dominant horizontal or downward-diagonal stroke, especially that to the lower right. This characteristic stroke has famously been called ‘silkworm head and wild goose tail’ (蠶頭雁尾 cántóu yànwěi）in Chinese) due to its distinctive shape.