anchor.diff:  ====
   
   .Rule attribute entries in the Rule Set area
  -[cols="1,1,1", options="header"]
  +[cols="35%,5%,60%", options="header"]
   |===
   | Keyword
   | Initial
  
positive.code: |Optional, may be used repeatedly.
  
  |Variables
  |Declarations of DRL globals, i.e., a type followed by a variable name. Multiple global definitions
                must be separated with a comma.
  |Optional, may be used repeatedly.
  
  |Functions
  
negative.code: |PRIORITY
  |P
  |An integer defining the "salience" value for the rule. Overridden by the "Sequential" flag.
  
  |DATE-EFFECTIVE
  |V
  |A string containing a date and time definition. The rule can be activated only if the current date and time is after the ``date-effective`` attribute. Example: ``"4-Sep-2018"``
  
  |DATE-EXPIRES
  |Z
  |A string containing a date and time definition. The rule cannot be activated if the current date and time is after the ``date-expires`` attribute. Example: ``"4-Oct-2018"``
  
  |DURATION
  |D
  