Well, Preview gives you an opportunity to set your margins for printing before you actually print. You can display margins by clicking on the Margins button, and then you can drag margins with your mouse in your Preview panel. Going to the Setup panel from Preview also lets you change margins. And, keep in mind, Landscape may be a better choice and Portrait for some spreadsheets. Also note that once you've opened a Preview panel and closed it, Excel shows, in dashed lines, where the print margins fall. Those lines can also be helpful in adjusting your columns for printing.