Along with the challenges of implementing the spell checker in a single threaded environment, Coletta discusses the performance challenges.

除了在单线程环境中实现拼写检查，Coletta还谈到了在性能方面的挑战。

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Spell Checking - background spell checker that highlights mispelled words in comments

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

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Another change was a spell checker that keeps an eye on every bit of text typed in almost any Firefox browser box be it in a web-based e-mail program or an add-on that lets people post blog updates directly.

BBC: NEWS | Technology | Firefox browser for web 2.0 age