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
Thai and Lao Braille different print diacritic in short ເ◌ຶອ "eua" and ເ◌ັຍ "ia". The short sign ( ็) is also used for the rarer virama ( ฺ). Numbers are the same as in other braille alphabets, though dot six is prefixed to the to specify that they're Thai or Lao digits. Thus, a sequence of numbers begins with . Single (though not paired) clause-final punctuation may introduced with , but is otherwise as in English Braille. There is some variability in the use of the to mark stop/period, comma, and the exclamation point. Thai Braille seems to use for the comma, while Lao