Optional information includes your address and phone number. For example, don t send a complaint via e-mail directly to the top just because you can. E-mail is easily forwarded. Cite all quotes, references and sources and respect copyright and license agreements. These are small symbols used to indicate some emotion in your e-mail.
Examples are as follows.
Your basic smiley. This is for a sarcastic or joking statement, or just to say you re happy. User just made a sarcastic remark. User just made a really devilish remark. A lewd remark was just made.