& sub()
 
  Syntax: sub(<number1>,<number2>)
 
  Returns the result of subtracting <number2> from <number1>. The 
  numbers may be floating point numbers, and a floating point result 
  is returned.
 
  Example:
  > say sub(5,2)
  You say "3"
 
	See Also: inc(), dec(), add(), div(), mod(), mul()