Special Features
Daniel Larlham Jr.
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Two characters might have identical Unicode skeletons but render differently in specific fonts, or have different skeletons but render identically in a particular typeface. Detecting this requires rendering glyphs and comparing pixel output. No purely Unicode-data-based approach handles it, and UTS #39 does not attempt to.。爱思助手下载最新版本对此有专业解读
Equal (4): Everything in this space must be equal to 4. The answer is 4-5, placed horizontally; 4-4, placed vertically.