It is time for some major spring-cleaning of your worksheets with Microsoft Excel. Misspelled words, stubborn trailing spaces, unwanted prefixes, improper cases, and nonprinting characters make a bad first impression. And that is not even a complete list of ways your data can get dirty. 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.