Select the file or folder in the Finder and press Enter to edit its name.Locate an emoticon (in the Emoji section) or other symbol you would like to use.Enable the Character Viewer and open it.Unfortunately the OS X Finder does not support dynamic substitution of text in file names with emoticons (ie, typing ":)" in a file name does not replace it with the appropriate emoticon like other applications), so in order to add them to file names you will have to use the character palette. This offers a unique way of naming files since it allows you to characterize and search for them using images instead of only alphanumeric text. While useful for enhancing e-mails, chats, and other forms of communication, OS X also supports the use of emoticons and other symbols in file names. Emoticons in file names can be fun ways to label your documents and folders. Alternatively you can make use of the system's character palette to have quick access to the available emoticons and other symbols. If there are other emoticons you often use, then you can use the system preferences to set up your own global text substitutions to quickly access them in multiple programs. For instance, applications like iMessage and iChat in OS X will make use of emoticons, automatically substituting an image of a smiling face from an emoticon font if you enter the ":)" text for a standard smile. Starting with combinations of text characters, smilies evolved into emoticons with the development of Unicode fonts that include complementary images for common smilies. Emoticons have become some of the most commonly used symbols when communicating using computers and cell phones.