Some of the things you can search for can't be keyed into the search field. For example, if you place the cursor in the find field and hit the tab key, it will tab ove to the change field, so you might think you can't search for tabs. But, if you copy a tab and paste it into the find field, it will look like this: \t. Its the same with a paragraph return \p, next column \c, next box \b, and a few others. You can also type those codes into the find or change field, just not the keystrokes that you use to make them in the document.