def getProperty(id, d=None):
  """Get the property 'id'.
     Returns the optional second argument or None if no such property is
     found.
  """

def getPropertyType(id):
  """Get the type of property 'id'.
     Returns None if no such property exists.
  """

def propertyIds():
  """Return a list of property ids.
  """

def propertyValues():
  """Return a list of actual property objects.
  """

def propertyItems():
  """Return a list of (id,property) tuples.
  """

def manage_addProperty(id, value, type, REQUEST=None):
  """Add a new property via the web.
     Sets a new property with the given id, type, and value.
  """

def manage_changeProperties(REQUEST=None, **kw):
  """Change existing object properties.
     Change object properties by passing either a REQUEST object or
     name=value parameters
  """