Some of them can also be inserted by pressing the applicable shortcut key, and others are inserted by the AutoCorrect feature when the applicable character sequence is typed. You can double-click any of the special characters listed to insert it into your document. After the Symbol dialog box opens, click the Special Characters tab. To open the Symbol dialog box, in the Symbols group on the Insert tab of the Ribbon, click Symbol, and then click More Symbols.
The special characters are listed on the Special Characters tab of the Symbol dialog box. Word refers to a specific set of characters as special characters.