anchor.diff:  ****
   * Selects the person and loads the Google search page the person at the specified `INDEX`.
   * The index refers to the index number shown in the most recent listing.
  -* The index *must be a positive integer* 1, 2, 3, ...
  +* The index *must be a positive integer* `1, 2, 3, ...`
   ****
   
   Examples:
  
positive.code: * The order of the keywords does not matter. e.g. `Hans Bo` will match `Bo Hans`
  * Only the name is searched.
  * Only full words will be matched e.g. `Han` will not match `Hans`
  * Persons matching at least one keyword will be returned (i.e. `OR` search). e.g. `Hans` will match `Hans Bo`
  ****
  
  Examples:
  
negative.code: Format: `add n/NAME p/PHONE_NUMBER e/EMAIL a/ADDRESS [t/TAG]...`
  
  [TIP]
  A person can have any number of tags (including 0)
  
  Examples:
  
  