Numerals and Special Characters
8-bit color
  A digital standard that uses 8 bits of information to describe each color pixel, providing up to 256 colors in one image (the standard for VGA displays).
24-bit color
  A digital standard that uses 24 bits of information to describe each color pixel, providing up to 16.7 million colors in one image (the highest digital standard currently available).
:: (double colon)
  Scope operator. An operator that defines the scope for the argument on the right. If the left argument is blank, the scope is global; if the left argument is a class name, the scope is within that class. Also called a scope resolution operator.