anchor.diff:  This is an Ant task too, and can be configured to read documents from various sources with
   Ant framework. For example, it can have filesets and exclude patterns of Ant.
   For full set of its ability to accept the source information, consult Ant's document
  -(this task extends from _MatchingTask_, which is a common base class of Ant's core tasks, e.g. Javac and Delete.)
  +(this task extends from _MatchingTask_, which is a common base class of Ant's core tasks, for example, Javac and Delete.)
   
   ==== Attributes
   
  
positive.code: | Attribute | Description | Required
  
  |select|An XPath expression which specifies the unit in which the source document is snipped. +
  It can include include names which belong some namespaces only when the namespaces are denoted by prefixes defined in the _Chinographis_'s child _namespace_ elements.| Yes
  
  |force|Whether this filter proceed to process even if existing output files seem new enough. The descendants (sinks, sinks' sinks, and so on) can not override this to `no`.| No; defaults to `no`
  |=================
  
negative.code: |=================
  | Attribute | Description | Required
  
  |name|The target of the processing instruction (PI).| No; defaulted to "chionographis-" and the type concatenated, for example, "chionographis-file-name"
  
  |type|The type of the meta-information, which is the data of PI.  +
  When `uri`, the data shall be the absolute URI of the original source. +
  