IRC has much in common with a regular in-person conversation. It is real-time many-on-many communication that is not logged by the server for posterity (many IRC clients do offer a logging feature, but the logs aren't generally publicly available then). Some bots may also feature logging facilities. Users on IRC usually identify users as ones "saying" something (instead of posting it) to reflect the similarity with face-to-face communication. Because IRC is a text-based communication medium, the obvious limitation of this metaphor is that the participants of a conversation on IRC do not actually see or hear each other, so alternative ways must be employed to convey the information that would otherwise be gained from facial expressions, tones of voice, and other audio-visual clues. It is common practice among IRC users to use
emoticons, pseudo-XML tags (for example ...) or actions (such as *smile* or *grin*) to achieve this. Other notations common to text only media are common on IRC, such as using asterisks around *words or phrases to be emphasized*, /using slashes around words or phrases/ to simulate italics, and imparting PARTICULAR EMPHASIS to something by writing it in all capitals. Some clients also respond to "percent notations," such as pairs of %B around bold text, %I surrounding italicized text, or %C to change the text color. Due to the lack of newlines on IRC, some users will use
email style quoting, but with an extra character to denote the end of the quote and the beginning of their message. Orthographical and grammatical mistakes are generally not frowned upon as much on IRC as they are in other kinds of Internet forums, given the informal and temporary nature of them. If the conversation is going at a decent speed, it may not be practical to correct every
typo. It is similar to many
instant messaging networks. ==Social structure==