Q&A
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I would like to learn more about hexadecimal notation. What resources are available?
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Several online resources exist regarding hexadecimal notation and its use for describing RGB color values. WebMonkey has an article explaining hexadecimal notation at http://hotwired.lycos.com/webmonkey/97/17/index2a.html, and HTMLGoodies has an introduction to hexadecimal notation at http://www.htmlgoodies.com/tutors/colorexp.html.
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Can the pattern element stagger the offset of its tiling content, similar to a diagonal grid?
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Although the element itself does not facilitate this, you can achieve this effect. Rather than enclosing only one object within the pattern element, enclose two. The two objects to be repeated should then, somewhat obviously, be arranged diagonally. Adjust the width and height of the pattern element to match the spacing of the two objects, and your desired effect is accomplished.