Many a times while entering data into database tables, we need to enter a large amount of data in single cell. Since Access 2010 table columns length has to be set first to view all the entries being written, you can use Zoom box instead to enter the data. Zoom box will be helpful especially when you need to insert large amount of data that cannot be displayed properly in control box.
To bring up zoom box, use Shift+F2 combination on keyboard. Now enter data into it without any hassle.