To do a final check, run Document Inspector. This tool checks for tracked changes and comments, hidden text, personal names in properties, and other information. To run Document Inspector, go to File > Info > Check for Issues and select Inspect Document. Repeat until you've reviewed all of the changes in your document. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.