Index: TODO
===================================================================
diff -u -rb6d81c6521d1e1d58f00763f5ab30a0946cc222a -r67ef5da1e732c50c33f9a3e5769b68ddf18cdaa7
--- TODO	(.../TODO)	(revision b6d81c6521d1e1d58f00763f5ab30a0946cc222a)
+++ TODO	(.../TODO)	(revision 67ef5da1e732c50c33f9a3e5769b68ddf18cdaa7)
@@ -1235,7 +1235,7 @@
 
 - changed argument order on nsf::is to make it conformant with Tcl conventions
 - removed objectproperty, replaced it by ::nsf::is
-- move functionalizy of objectproperty to make "obj info is ..." more efficient
+- move functionality of objectproperty to make "obj info is ..." more efficient
 
 - report "invalid parameter" in nsf::is and parametercheck, even when
   no-complain is used.
@@ -1250,6 +1250,8 @@
   (takes the result of the methods as conversion result)
 - added parameters for slots "allowemtpy" and "convert"
 - extended regression test
+- added handling of parameter options "allowemtpy" and "convert" 
+  in createFromParameterSyntax
 
 TODO: 
 - reflect changes in /is/objectproperty/info has/info is/ in migration guide
Index: library/nx/nx.tcl
===================================================================
diff -u -rb6d81c6521d1e1d58f00763f5ab30a0946cc222a -r67ef5da1e732c50c33f9a3e5769b68ddf18cdaa7
--- library/nx/nx.tcl	(.../nx.tcl)	(revision b6d81c6521d1e1d58f00763f5ab30a0946cc222a)
+++ library/nx/nx.tcl	(.../nx.tcl)	(revision 67ef5da1e732c50c33f9a3e5769b68ddf18cdaa7)
@@ -1002,10 +1002,8 @@
       set properties [string range $value [expr {$colonPos+1}] end]
       set name [string range $value 0 [expr {$colonPos -1}]]
       foreach property [split $properties ,] {
-        if {$property eq "required"} {
-          lappend opts -required 1
-        } elseif {$property eq "multivalued"} {
-          lappend opts -multivalued 1
+        if {$property in [list "required" "multivalued" "allowempty" "convert"]} {
+          lappend opts -$property 1
         } elseif {[string match type=* $property]} {
           set type [string range $property 5 end]
           if {![string match ::* $type]} {set type ::$type}