diff --git a/external/README.txt b/external/README.txt
index 1436e3b..357d44c 100644
--- a/external/README.txt
+++ b/external/README.txt
@@ -130,11 +130,10 @@ Writing object information to the external storage
   >>> writer = PyWriter()
   >>> writer.write(elements, output)
   >>> print output.getvalue()
-  type(u'country', u'Country', options=u'', typeInterface=u'', viewName=u'')...
-  type(u'query', u'Query', options=u'', typeInterface='loops.expert.concept.IQueryConcept',
-       viewName=u'')...
+  type(u'country', u'Country', viewName=u'', typeInterface=u''..., options=u''...)...
+  type(u'query', u'Query', viewName=u'', typeInterface='loops.expert.concept.IQueryConcept'..., options=u''...)...
   concept(u'myquery', u'My Query', u'query', options=u'option1\noption2',
-       viewName=u'mystuff.html')...
+       viewName=u'mystuff.html'...)...
   child(u'projects', u'customer', u'standard')...
   resource(u'doc04.txt', u'Document 4', u'textdocument', contentType='text/restructured')...
   resourceRelation(u'myquery', u'doc04.txt', u'standard')
@@ -172,7 +171,7 @@ corresponding extractor adapter.
   >>> PyWriter().write(extractor.extract(), output)
 
   >>> print output.getvalue()
-  type(u'country', u'Country', options=u'', typeInterface=u'', viewName=u'')...
+  type(u'country', u'Country', viewName=u'', typeInterface=u''..., options=u''...)...
   concept(u'myquery', u'My Query', u'query', options=u'option1\noption2',
           viewName=u'mystuff.html')[
               annotations(creators=(u'john',))]...
@@ -189,7 +188,7 @@ Extracting selected parts of the concept map
   >>> output = StringIO()
   >>> writer.write(elements, output)
   >>> print output.getvalue()
-  type(u'customer', u'Customer', options=u'', typeInterface=u'', viewName=u'')
+  type(u'customer', u'Customer', viewName=u'', typeInterface=u''..., options=u''...)
   concept(u'cust1', u'Customer 1', u'customer')
   concept(u'cust2', u'Customer 2', u'customer')
   concept(u'cust3', u'Customer 3', u'customer')
diff --git a/interfaces.py b/interfaces.py
index 16b1d42..eb63b96 100644
--- a/interfaces.py
+++ b/interfaces.py
@@ -674,6 +674,20 @@ class ITypeConcept(IConceptSchema, ILoopsAdapter):
         source='loops.TypeInterfaceSource',
         required=False)
 
+    conceptManager = schema.BytesLine(
+        title=_(u'Concept Manager Name'),
+        description=_(u'Name of the concept manager in which objects of this '
+                      u'type should be created.'),
+        default='',     #determined at runtime: 'concepts' or 'resources'
+        required=False)
+
+    namePrefix = schema.BytesLine(
+        title=_(u'Name Prefix'),
+        description=_(u'String that will be prepended to the (generated) name '
+                      u'of a newly created object of this type.'),
+        default='',
+        required=False)
+
     viewName = schema.TextLine(
         title=_(u'View Name'),
         description=_(u'Name of a special view be used for presenting '