Having your 25 most recently used documents on the File tab, in the Open menu is handy, but you may find it's not enough. You can increase the number shown up to 50, and you can pin (fasten) particular documents to the menu so that they remain there even if you haven't used them recently.

Word 2013 doesn't have a menu (unless you call Home, Insert, Page Layout, etc., a menu), and you can't customize what's not there. Word does still have context-sensitive right-click menus. However, unlike in previous versions of Word, the user interface no longer provides a way to customize them.

As you work on a document, you normally see the results of the field codes that you've inserted instead of the actual codes themselves. Because of this, these field results may be difficult to distinguish from normal text, so Word has added a feature called shading that helps you to locate such results.

Creating custom menus in Word is a funny feature you can use to create groups of the options that you use most often, and then plug them into the menu you name and use yourself.

The Math AutoCorrect tab of the AutoCorrect dialog box lets you to control whether and where to have AutoCorrect replace math terms with math symbols. If you use math in your documents, Math AutoCorrect can be a great timesaver; if you don't use math, turn it off by clearing the Replace text as you type check box on the Math AutoCorrect tab.

Word proposes very simple way to add horizontal lines to a document, but if you would like to remove these lines this wouldn't be so obvious.

By default, Word shows document tooltips when you hover on a button, but this option can be turned off.

If you choose to use the grammar checker rather than turn it off completely, tell it which grammar items you want it to check and which you don't.

When you create a new blank document, any text you type appears in the default font, which is called Calibri, at a font size of 11 points, which is a standard size for text in everyday documents (such as letters or reports).

Including a large number of in-line pictures in your documents slows down Word's performance. You can improve performance by replacing actual pictures with picture placeholders.