You can customize the way that Spell Checker searches for misspelled words, irregular capitalization, and so on. For example, you can have Spell Checker suggest replacement words that sound similar to the word that is found, or you can have Spell Checker beep when it finds a possible spelling error.
Ignores the case of words.
Ignore words with capital letters that do not begin a word (such as "THe").
Ignores words containing both letters and numbers (such as 2nd).
Ignores duplicate words (such as "the the").
Ignores words that look like URLs.
Checks the punctuation of sentences for mistakes.
Checks the spelling of compound words.
Checks the spelling of prefixes.
Use this setting to specify if you want to favor speed over quality, normal, or favor quality over speed. All these settings effect the length of the suggestion list.
You can customize languages in Spell Checker.