All major browsers (except Internet Explorer) offer their own built-in spellcheckers that perform inline spell checking in the editable elements: textareas, editable iframe and div elements. The content area of RadEditor is editable IFRAME. I hope that this feature will be implemented by IE developers in one of the next version of this browser and RadEditor will support it.
The misspelled words inside the provided example is red lined not by RadSpell, but by the built-in spellchecker of your browser.
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