MS Word is a word processor developed by Microsoft in 1983. The file saved in MS Word has .docx extension. It is a component of the Microsoft Office suite, but you can buy it separately and is available for both Windows and macOS. The latest version of MS Word is 2021. It has advanced features which allow you to format and edit your files and documents in the best possible way. Making changes to the settings of a page is called page formatting. Margins of a page can also be changed in a Word document.