How to open a word of English auto-correction feature

How to open a word of English automatic error correction function?
I use word2003, do not know from what time, the automatic correction feature on the missing.I do not know that it is not called automatic error correction, in any case is In one can enter a word after the spelling check, enter the following sentence to check the function of grammatical mistakes, but also automatic and does not need another column out what menu options.

review – Check your spelling click on Tools – spelling and grammar, it will automatically detect text, as if my input in the process of its own would suggest that that is inconsistent font color, Note the word in question, grammar or spelling may be wrong, you try and hope you useful!