Word 2003 displays any revisions and comments in your documents automatically, to help prevent the accidental distribution of documents containing revisions or comments.
You can see the option that makes this happen if you click Options on the Tools menu, and then click the Security tab.
The Make hidden markup visible when opening or saving check box is selected by default in Word 2003. It's highly recommended that you keep this option selected.
Why? It's your seat belt. In case you forget (or don't notice) that you used the Show menu to hide revisions or comments, this option reminds you.
Clearing the check box for this option will not make markup go away. It will let you hide it — but only from yourself. All revisions and comments will still show up when someone else opens your document on their computer. The only way to get rid of markup is to accept or reject changes and to delete comments.
Want airbags too? Another option on the Security tab, Warn before printing, saving or sending a file that contains tracked changes or comments, is not selected automatically. Consider selecting this option if you want to be warned before any of these actions when revisions or comments are present.