diff --git a/xo-reader2/CMakeLists.txt b/xo-reader2/CMakeLists.txt
index 1f6b9d75..4fcbe399 100644
--- a/xo-reader2/CMakeLists.txt
+++ b/xo-reader2/CMakeLists.txt
@@ -150,6 +150,18 @@ xo_add_genfacetimpl(
     OUTPUT_CPP_DIR src/reader2
 )
 
+# note: manual target; generated code committed to git
+xo_add_genfacetimpl(
+    TARGET xo-reader2-facetimpl-printable-expectformalargssm
+    FACET_PKG xo_printable2
+    FACET Printable
+    REPR ExpectFormalArgSsm
+    INPUT idl/IPrintable_DExpectFormalArgSsm.json5
+    OUTPUT_HPP_DIR include/xo/reader2
+    OUTPUT_IMPL_SUBDIR ssm
+    OUTPUT_CPP_DIR src/reader2
+)
+
 # ----------------------------------------------------------------
 
 # note: manual target; generated code committed to git
diff --git a/xo-reader2/idl/IPrintable_DExpectFormalArgSsm.json5 b/xo-reader2/idl/IPrintable_DExpectFormalArgSsm.json5
new file mode 100644
index 00000000..854a458e
--- /dev/null
+++ b/xo-reader2/idl/IPrintable_DExpectFormalArgSsm.json5
@@ -0,0 +1,13 @@
+{
+    mode: "implementation",
+    includes: [ "<xo/printable2/Printable.hpp>",
+                "<xo/printable2/detail/IPrintable_Xfer.hpp>" ],
+    local_types: [],
+    namespace1: "xo",
+    namespace2: "scm",
+    facet_idl: "idl/Printable.json5",
+    brief: "provide APrintable interface for DExpectFormalArgSsm",
+    using_doxygen: true,
+    repr: "DExpectFormalArgSsm",
+    doc: [ "implement APrintable for DExpectFormalArgSsm" ],
+}
diff --git a/xo-reader2/include/xo/reader2/DExpectFormalArgSsm.hpp b/xo-reader2/include/xo/reader2/DExpectFormalArgSsm.hpp
index 3c913b90..540b66c2 100644
--- a/xo-reader2/include/xo/reader2/DExpectFormalArgSsm.hpp
+++ b/xo-reader2/include/xo/reader2/DExpectFormalArgSsm.hpp
@@ -48,6 +48,7 @@ namespace xo {
         public:
             using TypeDescr = xo::reflect::TypeDescr;
             using DArena = xo::mm::DArena;
+            using ppindentinfo = xo::print::ppindentinfo;
 
         public:
             DExpectFormalArgSsm();
@@ -97,6 +98,13 @@ namespace xo {
                                                      ParserStateMachine * p_psm);
 
             ///@}
+            /** @defgroup scm-expectformalargssm-printable-facet printable facet methods **/
+            ///@{
+
+            /** pretty-printing support **/
+            bool pretty(const ppindentinfo & ppii) const;
+
+            ///@}
 
 #ifdef NOT_YET
 
@@ -117,8 +125,6 @@ namespace xo {
             virtual void on_typedescr(TypeDescr td,
                                       parserstatemachine * p_psm) override;
 
-            virtual void print(std::ostream & os) const override;
-
         private:
             static std::unique_ptr<expect_formal_xs> make();
 #endif
diff --git a/xo-reader2/include/xo/reader2/ssm/IPrintable_DExpectFormalArgSsm.hpp b/xo-reader2/include/xo/reader2/ssm/IPrintable_DExpectFormalArgSsm.hpp
new file mode 100644
index 00000000..21e724e1
--- /dev/null
+++ b/xo-reader2/include/xo/reader2/ssm/IPrintable_DExpectFormalArgSsm.hpp
@@ -0,0 +1,62 @@
+/** @file IPrintable_DExpectFormalArgSsm.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/IPrintable_DExpectFormalArgSsm.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_repr.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/IPrintable_DExpectFormalArgSsm.json5]
+ **/
+
+#pragma once
+
+#include "Printable.hpp"
+#include <xo/printable2/Printable.hpp>
+#include <xo/printable2/detail/IPrintable_Xfer.hpp>
+#include "DExpectFormalArgSsm.hpp"
+
+namespace xo { namespace scm { class IPrintable_DExpectFormalArgSsm; } }
+
+namespace xo {
+    namespace facet {
+        template <>
+        struct FacetImplementation<xo::print::APrintable,
+                                   xo::scm::DExpectFormalArgSsm>
+        {
+            using ImplType = xo::print::IPrintable_Xfer
+              <xo::scm::DExpectFormalArgSsm,
+               xo::scm::IPrintable_DExpectFormalArgSsm>;
+        };
+    }
+}
+
+namespace xo {
+    namespace scm {
+        /** @class IPrintable_DExpectFormalArgSsm
+         **/
+        class IPrintable_DExpectFormalArgSsm {
+        public:
+            /** @defgroup scm-printable-dexpectformalargssm-type-traits **/
+            ///@{
+            using ppindentinfo = xo::print::APrintable::ppindentinfo;
+            using Copaque = xo::print::APrintable::Copaque;
+            using Opaque = xo::print::APrintable::Opaque;
+            ///@}
+            /** @defgroup scm-printable-dexpectformalargssm-methods **/
+            ///@{
+            // const methods
+            /** Pretty-printing support for this object.
+See [xo-indentlog/xo/indentlog/pretty.hpp] **/
+            static bool pretty(const DExpectFormalArgSsm & self, const ppindentinfo & ppii);
+
+            // non-const methods
+            ///@}
+        };
+
+    } /*namespace scm*/
+} /*namespace xo*/
+
+/* end */
\ No newline at end of file
diff --git a/xo-reader2/src/reader2/CMakeLists.txt b/xo-reader2/src/reader2/CMakeLists.txt
index 49be467b..aebe5d77 100644
--- a/xo-reader2/src/reader2/CMakeLists.txt
+++ b/xo-reader2/src/reader2/CMakeLists.txt
@@ -39,7 +39,7 @@ set(SELF_SRCS
 
     DExpectFormalArgSsm.cpp
     ISyntaxStateMachine_DExpectFormalArgSsm.cpp
-    # IPrintable_DExpectFormalArgSsm.cpp
+    IPrintable_DExpectFormalArgSsm.cpp
 
     DExpectSymbolSsm.cpp
     ISyntaxStateMachine_DExpectSymbolSsm.cpp
diff --git a/xo-reader2/src/reader2/DDefineSsm.cpp b/xo-reader2/src/reader2/DDefineSsm.cpp
index c4628c22..af8cee87 100644
--- a/xo-reader2/src/reader2/DDefineSsm.cpp
+++ b/xo-reader2/src/reader2/DDefineSsm.cpp
@@ -739,12 +739,10 @@ namespace xo {
             assert(expr.data());
             (void)expr;
 
-            return ppii.pps()->pretty_struct
-                (ppii,
-                 "DDefineSsm",
-                 refrtag("defstate", defstate_),
-                 refrtag("def_expr", expr)
-                    );
+            return ppii.pps()->pretty_struct(ppii,
+                                             "DDefineSsm",
+                                             refrtag("defstate", defstate_),
+                                             refrtag("def_expr", expr));
         }
     } /*namespace scm*/
 } /*namespace xo*/
diff --git a/xo-reader2/src/reader2/DExpectFormalArgSsm.cpp b/xo-reader2/src/reader2/DExpectFormalArgSsm.cpp
index 31a26888..7952c8f2 100644
--- a/xo-reader2/src/reader2/DExpectFormalArgSsm.cpp
+++ b/xo-reader2/src/reader2/DExpectFormalArgSsm.cpp
@@ -216,18 +216,15 @@ namespace xo {
                 exprstate::on_typedescr(td, p_psm);
             }
         }
-
-        void
-        expect_formal_xs::print(std::ostream & os) const {
-            os << "<expect_formal_xs"
-               << xtag("type", formalxs_type_);
-            if (!result_.name().empty())
-                os << xtag("result.name", result_.name());
-            if (result_.td())
-                os << xtag("result.td", result_.td());
-            os << ">";
-        }
 #endif
+
+        bool
+        DExpectFormalArgSsm::pretty(const ppindentinfo & ppii) const {
+            return ppii.pps()->pretty_struct
+                       (ppii,
+                        "DExpectFormalArgSsm");
+        }
+
     } /*namespace scm*/
 } /*namespace xo*/
 
diff --git a/xo-reader2/src/reader2/IPrintable_DExpectFormalArgSsm.cpp b/xo-reader2/src/reader2/IPrintable_DExpectFormalArgSsm.cpp
new file mode 100644
index 00000000..a38d4d86
--- /dev/null
+++ b/xo-reader2/src/reader2/IPrintable_DExpectFormalArgSsm.cpp
@@ -0,0 +1,28 @@
+/** @file IPrintable_DExpectFormalArgSsm.cpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/IPrintable_DExpectFormalArgSsm.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_any.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/IPrintable_DExpectFormalArgSsm.json5]
+**/
+
+#include "ssm/IPrintable_DExpectFormalArgSsm.hpp"
+
+namespace xo {
+    namespace scm {
+        auto
+        IPrintable_DExpectFormalArgSsm::pretty(const DExpectFormalArgSsm & self, const ppindentinfo & ppii) -> bool
+        {
+            return self.pretty(ppii);
+        }
+
+
+    } /*namespace scm*/
+} /*namespace xo*/
+
+/* end IPrintable_DExpectFormalArgSsm.cpp */
\ No newline at end of file