Punctuation centuries meant that a standard system of punctuation was urgently required." The introduction of a standard system of punctuation has also been attributed to the Venetian printers Aldus Manutius and his grandson. They have been credited with popularizing the practice of ending sentences with the colon or full stop, inventing the semicolon, making occasional use of parentheses and creating the modern comma by lowering the virgule. By 1566, Aldus Manutius the Younger was able to state that the main object of punctuation was the clarification of syntax. By the 19th century, punctuation in the western world had evolved "to classify
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