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“LNN 遗留密文”是 LNN 密文 PUA 编码中的一个区段，范围为 U+E230..U+E26F。该区段目前编码了“LNN 二代密文”的字符。
E230..E249 一段曾编码了“LNN 一代密文”的字符，但由于“一代密文”实际上应界定为一种英文字体，且其字形对照表遗失，该部分代码点现已弃用并暂时留空。
E250 LNN GENERATION TWO CIPHER LETTER A E251 LNN GENERATION TWO CIPHER LETTER B E252 LNN GENERATION TWO CIPHER LETTER C E253 LNN GENERATION TWO CIPHER LETTER D E254 LNN GENERATION TWO CIPHER LETTER E E255 LNN GENERATION TWO CIPHER LETTER F E256 LNN GENERATION TWO CIPHER LETTER G E257 LNN GENERATION TWO CIPHER LETTER H E258 LNN GENERATION TWO CIPHER LETTER I E259 LNN GENERATION TWO CIPHER LETTER J E25A LNN GENERATION TWO CIPHER LETTER K E25B LNN GENERATION TWO CIPHER LETTER L E25C LNN GENERATION TWO CIPHER LETTER M E25D LNN GENERATION TWO CIPHER LETTER N E25E LNN GENERATION TWO CIPHER LETTER O E25F LNN GENERATION TWO CIPHER LETTER P E260 LNN GENERATION TWO CIPHER LETTER Q E261 LNN GENERATION TWO CIPHER LETTER R E262 LNN GENERATION TWO CIPHER LETTER S E263 LNN GENERATION TWO CIPHER LETTER T E264 LNN GENERATION TWO CIPHER LETTER U E265 LNN GENERATION TWO CIPHER LETTER V E266 LNN GENERATION TWO CIPHER LETTER W E267 LNN GENERATION TWO CIPHER LETTER X E268 LNN GENERATION TWO CIPHER LETTER Y E269 LNN GENERATION TWO CIPHER LETTER Z E26A LNN GENERATION TWO CIPHER LETTER UE E26B LNN GENERATION TWO CIPHER LETTER MU E26C <UNASSIGNED> E26D <UNASSIGNED> E26E <UNASSIGNED> E26F <UNASSIGNED> E270 LNN GENERATION TWO CIPHER DIGIT ZERO E271 LNN GENERATION TWO CIPHER DIGIT ONE E272 LNN GENERATION TWO CIPHER DIGIT TWO E273 LNN GENERATION TWO CIPHER DIGIT THREE E274 LNN GENERATION TWO CIPHER DIGIT FOUR E275 LNN GENERATION TWO CIPHER DIGIT FIVE E276 LNN GENERATION TWO CIPHER DIGIT SIX E277 LNN GENERATION TWO CIPHER DIGIT SEVEN E278 LNN GENERATION TWO CIPHER DIGIT EIGHT E279 LNN GENERATION TWO CIPHER DIGIT NINE E27A <UNASSIGNED> E27B <UNASSIGNED> E27C <UNASSIGNED> E27D <UNASSIGNED> E27E <UNASSIGNED> E27F <UNASSIGNED>
目前没有任何软件支持识别或显示本区段内的字符。