 Some authors claim that the reason for this was a practical one, in order to get a character that was clearly distinguishable from the apostrophes, the commas and the parentheses.Also, in other scripts, the angular quotation marks are distinguishable from other punctuation characters—the Greek breathing marks, the Armenian emphasis and apostrophe, the Arabic comma, decimal separator, thousands separator, etc.Other authors claim that the reason for this was an aesthetic one.