anchor.diff:  |=================
   
   
  -=== _Snip_ filter
  +=== Snip filter
   
   A _Snip_ filter receives XML documents, generates document fragments pointed by an XPath criteria from them,
   and passes the resulted document fragments as independent documents to sinks it has.
  
positive.code: |name|The target of the processing instruction (PI).| No; defaulted to "chionographis-" and the type concatenated, e.g., "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. +
  When "file-name", the data shall be the last part of the path of the URI. +
  When "file-title", the data shall be the substring of the file name before its last period (".").| Yes
  
  |=================
  
  
negative.code: |=================
  | Element | Description | Required
  |param|A key-value pair of stylesheet parameter. As of now, only string parameter values are supported.| No
  |depends|Resources depended by this filter additionally. The resources are used only to decide whether the corresponding output files are up to date. +
  The way to configure this element is the same as that to configure one that appears in _Chionographis_ driver. So please see the _Chionographis_ driver's explanation for details.| No
  |transform|A _Transform_ sink. .4+| No; at least one sink required
  |all|An _All_ sink.
  |snip|A _Snip_ sink.
  