它的意义在于，对于拼写错误的单词，您应当查找和它“接近”(这就使用了距离的定义)的单词。
The idea is that for a misspelling, you should look for words that are suitably "close" -- using the definition of distance -- to the misspelled word.
一些拼写校正程序（比如说 mod_speling ——— 没错，它只有一个 “l”）可用于纠正词典单词中的错误，从而将用户定向到正确的页面。
Spelling correctors, such as mod_speling (yes, it has one "l") can be used to correct errors in dictionary words that may lead a user to the right page.
拼写检查——后台拼写检查器，可以高亮注释中拼写错误的单词
Spell Checking - background spell checker that highlights mispelled words in comments
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