anchor.diff:  
   *Description*: [.description]#Formats a number as a date/time according to the format specified by the argument. The argument
   	must be a String that is a valid Java SimpleDateFormat format. The Subject is expected to be a Number that
  -	represents the number of milliseconds since Midnight GMT January 1, 1970.#
  +	represents the number of milliseconds since Midnight GMT on January 1, 1970.#
   
   *Subject Type*: [.subject]#Number#
   
  
positive.code: manipulation, such as the `toUpper` function. Others, such as the `equals` and `matches` functions,
  provide comparison functionality. Functions also exist for manipulating dates and times and
  for performing mathematical operations. Each of these functions is described below, in the
  <<functions> section, with an explanation of what the function does, the arguments that it 
  requires, and the type of information that it returns.
  
  When we perform a function call on an attribute, as above, we refer to the attribute as the
  
negative.code: 
  *Description*: [.description]#Converts a String into a Number, based on the format specified by the argument. The argument
  	must be a String that is a valid Java SimpleDateFormat syntax. The Subject is expected to be a String
  	that is formatted according the argument. The return value is the number of milliseconds since 
  	Midnight GMT on January 1, 1970.#
  
  *Subject Type*: [.subject]#String#
  
  