You can have Excel make a spreadsheet in read only format for others, so that people can read its contents but not edit them, or you can enforce other content restrictions.

Also known as a Comma Separated Value file, a comma delimited file is a standard file type that a number of different data-manipulation programs can read and understand, including Microsoft Excel.

Image: 200dgr/Shutterstock The article, Use a custom format in Excel to display easier to read millions uses a custom format to make large values more readable.