old_contents: """
  Configuration additions for tiddlywebwiki.
  
  base_tiddlywiki -- the file location of the tiddlywiki
  file into which Tiddlers are pushed when creating
  outgoing TiddlyWiki representations from TiddlyWeb. This
  can be an absolute path or relative to the startup 
  directory of the server.
  """
  
  try:
      from pkg_resources import resource_filename
      BASE_TIDDLYWIKI = resource_filename('tiddlywebwiki', 'empty.html')
  except ImportError:
      BASE_TIDDLYWIKI = 'tiddlywebwiki/empty.html'
  
  
  config = {
          'base_tiddlywiki': BASE_TIDDLYWIKI, 
          'twanager_plugins': [
              'tiddlywebwiki.fromsvn',
              'tiddlywebwiki.instancer',
              'tiddlywebwiki.twanager'
              ],
          'instance_tiddlers': [
              ('system', [
                  'http://svn.tiddlywiki.org/Trunk/association/adaptors/TiddlyWebAdaptor.js',
                  'http://svn.tiddlywiki.org/Trunk/association/plugins/ServerSideSavingPlugin.js',
                  'http://svn.tiddlywiki.org/Trunk/association/plugins/TiddlyWebConfig.js'
                  ]),
              ],
          'extension_types': {
              'wiki': 'text/x-tiddlywiki',
              },
          'serializers': {
              'text/x-tiddlywiki': ['tiddlywebwiki.serialization', 'text/html; charset=UTF-8'],
              },
          'wikitext_renderer': 'wikklytextrender',
          'wikitext_render_map': {
              'text/x-tiddlywiki': 'wikklytextrender',
              },
          }
  
new_contents: """
  Configuration additions for tiddlywebwiki.
  
  base_tiddlywiki -- the file location of the tiddlywiki
  file into which Tiddlers are pushed when creating
  outgoing TiddlyWiki representations from TiddlyWeb. This
  can be an absolute path or relative to the startup 
  directory of the server.
  """
  
  try:
      from pkg_resources import resource_filename
      BASE_TIDDLYWIKI = resource_filename('tiddlywebwiki', 'empty.html')
  except ImportError:
      BASE_TIDDLYWIKI = 'tiddlywebwiki/empty.html'
  
  
  config = {
          'base_tiddlywiki': BASE_TIDDLYWIKI, 
          'twanager_plugins': [
              'tiddlywebwiki.fromsvn',
              'tiddlywebwiki.instancer',
              'tiddlywebwiki.twanager'
              ],
          'instance_tiddlers': [
              ('system', [
                  'http://svn.tiddlywiki.org/Trunk/association/adaptors/TiddlyWebAdaptor.js',
                  'http://svn.tiddlywiki.org/Trunk/association/plugins/ServerSideSavingPlugin.js',
                  'http://svn.tiddlywiki.org/Trunk/association/plugins/TiddlyWebConfig.js'
                  ]),
              ],
          'extension_types': {
              'wiki': 'text/x-tiddlywiki',
              },
          'serializers': {
              'text/x-tiddlywiki': ['tiddlywebwiki.serialization', 'text/html; charset=UTF-8'],
              },
          'wikitext.default_renderer': 'wikklytextrender',
          # XXX the following is, in most cases, redundant
          'wikitext.type_render_map': {
              'text/x-tiddlywiki': 'wikklytextrender',
              },
          }
  
subject: Rename wikitext rendering config items.