Index: generic/gentclAPI.decls
===================================================================
diff -u -r536cacc0e51390f46b6bde5874c823ea03e732e2 -rb1f416527fc1e567ff1db9ad5a720b3bbc5678ee
--- generic/gentclAPI.decls	(.../gentclAPI.decls)	(revision 536cacc0e51390f46b6bde5874c823ea03e732e2)
+++ generic/gentclAPI.decls	(.../gentclAPI.decls)	(revision b1f416527fc1e567ff1db9ad5a720b3bbc5678ee)
@@ -86,6 +86,11 @@
   {-argName "objectkind" -type "type|object|class|baseclass|metaclass|hasmixin"}
   {-argName "value" -required 0 -type tclobj}
 }
+xotclCmd is2 XOTclIs2Cmd {
+  {-argName "constraint" -required 1 -type tclobj}
+  {-argName "value" -required 1 -type tclobj}
+  {-argName "arg" -required 0 -type tclobj}
+}
 xotclCmd method XOTclMethodCmd {
   {-argName "object" -required 1 -type object}
   {-argName "-inner-namespace"}