PostScript的坐标系统将把原点(0,0)放置在页面的左下角，并且每英寸包含72个点。

PostScript's coordinate system puts the origin (0, 0) at the lower left corner of the page, and contains 72 points per inch.

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请记住，当页面在 Internet Explorer 中从右到左显示时，必须修改算法，比如按照原点的偏移量调整元素的位置。

Remember that you must change your arithmetic when the page is shown in Internet Explorer from right to left, such as by adjusting the position of the element by the offset of the origin.

youdao

请注意，页面坐标空间的原点在工作区的左上角，情况将总是如此。

Note that the page coordinate space has its origin at the upper-left corner of the client area; this will always be the case.

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