Analphabetic characters
Analphabetic symbols are typographic marks that are not part of the basic character set
Though there are few Japanese typefaces reliably available for HTML interfaces, analphabetic glyphs are more abundant and varied than in Latin typefaces, including a variety of parentheses, bullet-like circles, stylized digits, and other specialized symbols. Explained better by Chris Palmieri -“Some copywriters may use these with great enthusiasm or not at all.”
Representation of Analphabetic characters