Index: library/lib/doc-tools.tcl
===================================================================
diff -u -r7c5b655f1dded2eaf5792f0966de9e5410d26b3f -rf7e7dd532f08b253e4b81e73074e216674685d60
--- library/lib/doc-tools.tcl	(.../doc-tools.tcl)	(revision 7c5b655f1dded2eaf5792f0966de9e5410d26b3f)
+++ library/lib/doc-tools.tcl	(.../doc-tools.tcl)	(revision f7e7dd532f08b253e4b81e73074e216674685d60)
@@ -429,8 +429,7 @@
     # :forward owning_entity_class {% [[:info parent] info parent] }
     :method init args {
       :defaultmethods [list get append]
-      :multivalued true
-      :allowempty true
+      :multiplicity 0..n 
       set :incremental true
       # TODO: setting a default value leads to erratic behaviour;
       # needs to be verified -> @author returns ""