Colon (punctuation) Colon (punctuation) The colon ( : ) is a punctuation mark consisting of two equally sized dots centered on the same vertical line. A colon precedes an explanation or an enumeration, or list. A colon is also used with ratios, titles and subtitles of books, city and publisher in bibliographies, Biblical citations between chapter and verse, and for salutations business letters and other formal letter writing, and often to separate hours and minutes. The most common use of the colon is to inform the reader that what follows the colon proves, explains, defines, describes, or lists elements of what preceded
Irony punctuation Also it is common to use the combination of a parenthesis and a interrogation symbol as "(?" to mark irony A "SarcMark" symbol requiring custom computer font software was proposed in 2010. Another method of expressing sarcasm is by placing a tilde (~) adjacent to the punctuation. This allows for easy use with any keyboard, as well as variation. Variations include dry sarcasm (~.), enthusiastic sarcasm (~!), and sarcastic questions (~?). The sports blog "Card Chronicle" has adopted this methodology by inserting (~) after the period at the end of the sentence. It has also been adopted by the Udacity