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
Comma signified by a dot at the bottom, middle, or top of the line. For a short passage (a "komma"), a "media distinctio" dot was placed mid-level ( · ). This is the origin of the concept of a comma, although the name came to be used for the mark itself instead of the clause it separated. The mark used today is descended from a diagonal slash, or "virgula suspensiva" ( / ), used from the 13th to 17th centuries to represent a pause. The modern comma was first used by Aldus Manutius. In general, the comma shows that the words