anchor.diff:  ----
   
   *Syntax*
  -
   [source,txt]
   ----
   startsWith(<source>, <substring>)
  
positive.code: ----
  
  *Syntax*
  
  [source,txt]
  ----
  substring(<source>, <start_pos>[, <end_pos>])
  
negative.code: ----
  
  *Syntax*
  [source,txt]
  ----
  wildcard(<source>, <wildcard_exp>[, ...])
  