Index: TODO
===================================================================
diff -u -rede10bf0265c3943458771665317aa0c12971900 -r2cca652c92b1933dd1b27f002a4c4886730f34f1
--- TODO	(.../TODO)	(revision ede10bf0265c3943458771665317aa0c12971900)
+++ TODO	(.../TODO)	(revision 2cca652c92b1933dd1b27f002a4c4886730f34f1)
@@ -4039,6 +4039,13 @@
 - handle cyclical superclassclass dependencies during object system finalize
 - extend regression test
 
+nx.tcl:
+- set multiplicty for mixins and filters by default from 1..n to 0..n
+  to avoid error messages, when e.g. empty mixin lists are configured.
+  Setting emtpy mixin-lists is strictly speaking not necessary,
+  but this eases the code in cases the lists are sometimes empty.
+
+
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 TODO: