12.1.2 Formatter Implementations 
Two implementations of formatter objects are provided by this module.
Most applications may use one of these classes without modification or
subclassing.
- 
  | class NullFormatter( | [writer]) |  
 
- 
A formatter which does nothing.  If writer is omitted, a
NullWriter instance is created.  No methods of the writer are
called by NullFormatter instances.  Implementations should
inherit from this class if implementing a writer interface but don't
need to inherit any implementation.
- 
  | class AbstractFormatter( | writer) |  
 
- 
The standard formatter.  This implementation has demonstrated wide
applicability to many writers, and may be used directly in most
circumstances.  It has been used to implement a full-featured
World Wide Web browser.
Release 2.4.3, documentation updated on 29 March 2006.
 
See About this document... for information on suggesting changes.