anchor.diff:  _Transform_ drivers retrieve the pointee from the source documents of the transformation; on the other hand, the _Chionographis_, _All_, and _Snip_ drivers retrieve from their result document (the source document of this sink). +
   The XPath expression can include names which belong some namespaces only when the namespaces are denoted by prefixes defined in the task's child _namespace_ elements.| No; see note
   
  -|mkdirs|Whether this sink creates parent directories of the destination file if needed.| No; defaults to +yes+
  +|mkDirs|Whether this sink creates parent directories of the destination file if needed.| No; defaults to +yes+
   
   |force|Whether this sink creates output files even if existing files seem new enough.| No; defaults to +no+
   
  -|timid|Whether this sink avoids overwriting existing files which already have identical contents to be written.| No; defaults to +no+
  -|=================
  -
  -==== Nested elements
  -
  -[options="header", cols="1,3,1"]
  -|=================
  -| Element | Description | Required
  -|file mappers|A mapper which makes the output file names from the original source file names if _refer_ attribute not specified, otherwise from the extracted source document content pointed by _refer_ attribute.| No; see note
  +|timid|Whether this sink avoids overwriting existing files which already have identical contents to be written. In cases where overwriting files triggers other downstream processes, setting to +yes+ might cut down the total cost dramatically. | No; defaults to +no+
  +|=================
  +
  +==== Nested elements
  +
  +[options="header", cols="1,3,1"]
  +|=================
  +| Element | Description | Required
  +|_File mappers_|A mapper which makes the output file names from the original source file names if _refer_ attribute not specified, otherwise from the extracted source document content pointed by _refer_ attribute.| No; see note
   |=================
   
   [NOTE]
  
positive.code: [options="header", cols="1,3,1"]
  |=================
  | Attribute | Description | Required
  |basedir|The base directory of this task.| No; defaults to the project's base directory
  |srcdir|The source directory. If not absolute, will be resolved by the base directory of the task.| No; defaults to the task's base directory
  |force|Whether this driver 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+
  |cache|Whether this driver uses a document cache shared in Chionographis library for external parsed entities. When set to +no+, the performance will fall significantly. This option is provided to enable users to evade a certain XSLT processor's bug.| No; defaults to +no+
  |verbose|Whether this task promotes log levels from +verbose+ to +info+ for some log entries, such as reports of document output.| No; defaults to +no+
  |parallel|Whether parallel execution is employed. The parallel execution is done with static thread pool whose maximum thread count coincides with the available processor count.| No; defaults to +yes+
  
  |dryrun|Whether "dry run" mode is enabled. In "dry run" mode, sinks avoid finalizing all of their outputs (to be specific, they do not write files). +
  You can enable this mode also by setting +net.furfurylic.chionographis.dry-run+ Ant property to +true+.
  If you set this property to +false+, "dry run" mode is disabled regardless of this driver's attribute. That is, the latter way (through the Ant property) is stronger and definitive. | No; defaults to +no+
  
  
negative.code: |=================
  | Attribute | Description | Required
  
  |destDir|The destination directory. If not absolute, will be resolved by the base directory of the task.| No; defaults to the task's base directory
  
  |dest|The destination file path. If not absolute, will be resolved by the destination directory.| No; see note
  
  