diff --git a/CMakeLists.txt b/CMakeLists.txt
index 63ff9fad..ae1bb8c2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,6 +34,30 @@ xo_add_genfacet(
 
 # ----------------------------------------------------------------
 
+xo_add_genfacetimpl(
+    TARGET xo-expression2-facetimpl-symboltable-localsymtab
+    FACET_PKG xo_expression2
+    FACET SymbolTable
+    REPR LocalSymtab
+    INPUT idl/ISymbolTable_DLocalSymtab.json5
+    OUTPUT_HPP_DIR include/xo/expression2
+    OUTPUT_IMPL_SUBDIR symtab
+    OUTPUT_CPP_DIR src/expression2
+)
+
+xo_add_genfacetimpl(
+    TARGET xo-expression2-facetimpl-printable-localsymtab
+    FACET_PKG xo_printable2
+    FACET Printable
+    REPR LocalSymtab
+    INPUT idl/IPrintable_DLocalSymtab.json5
+    OUTPUT_HPP_DIR include/xo/expression2
+    OUTPUT_IMPL_SUBDIR symtab
+    OUTPUT_CPP_DIR src/expression2
+)
+
+# ----------------------------------------------------------------
+
 # note: manual target; generated code committed to git
 xo_add_genfacet(
     TARGET xo-expression2-facet-expression
diff --git a/idl/IPrintable_DLocalSymtab.json5 b/idl/IPrintable_DLocalSymtab.json5
new file mode 100644
index 00000000..3f17e64e
--- /dev/null
+++ b/idl/IPrintable_DLocalSymtab.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 DLocalSymtab",
+    using_doxygen: true,
+    repr: "DLocalSymtab",
+    doc: [ "implement APrintable for DLocalSymtab" ],
+}
diff --git a/idl/ISymbolTable_DLocalSymtab.json5 b/idl/ISymbolTable_DLocalSymtab.json5
new file mode 100644
index 00000000..026c0ed1
--- /dev/null
+++ b/idl/ISymbolTable_DLocalSymtab.json5
@@ -0,0 +1,12 @@
+{
+    mode: "implementation",
+    includes: [ ],
+    local_types: [ ],
+    namespace1: "xo",
+    namespace2: "scm",
+    facet_idl: "idl/SymbolTable.json5",
+    brief: "provide ASymbolTable interface for DLocalSymtab",
+    using_doxygen: true,
+    repr: "DLocalSymtab",
+    doc: [ "implement ASymbolTable for DLocalSymtab" ],
+}
diff --git a/include/xo/expression2/Binding.hpp b/include/xo/expression2/Binding.hpp
index e97cc715..6dffb16b 100644
--- a/include/xo/expression2/Binding.hpp
+++ b/include/xo/expression2/Binding.hpp
@@ -25,6 +25,7 @@ namespace xo {
             static Binding local(int32_t j_slot) { return Binding(0, j_slot); }
 
             bool is_global() const { return i_link_ == s_link_global; }
+            bool is_local() const { return (i_link_ == 0) && (j_slot_ >= 0); }
 
             int32_t i_link() const noexcept { return i_link_; }
             int32_t j_slot() const noexcept { return j_slot_; }
diff --git a/include/xo/expression2/DLocalSymtab.hpp b/include/xo/expression2/DLocalSymtab.hpp
index 9eada176..01d9aa85 100644
--- a/include/xo/expression2/DLocalSymtab.hpp
+++ b/include/xo/expression2/DLocalSymtab.hpp
@@ -45,20 +45,23 @@ namespace xo {
             /** @defgroup scm-lambdaexpr-constructors **/
             ///@{
 
-            /** empty instance with capacity for n slots.
+            /** empty instance with parent @p p and capacity for @p n slots.
              *  Caller must ensure that slots_[0..n) are actually addressable
              **/
-            DLocalSymtab(size_type n);
+            DLocalSymtab(DLocalSymtab * p, size_type n);
 
             /** scaffold empty symtab instance,
              *  with capacity for @p n slots, using memory from allocator @p mm
              **/
-            static DLocalSymtab * _make_empty(obj<AAllocator> mm, size_type n);
+            static DLocalSymtab * _make_empty(obj<AAllocator> mm,
+                                              DLocalSymtab * p,
+                                              size_type n);
 
             ///@}
             /** @defgroup scm-lambdaexpr-methods **/
             ///@{
 
+            DLocalSymtab * parent() const noexcept { return parent_; }
             size_type capacity() const noexcept { return capacity_; }
             size_type size() const noexcept { return size_; }
 
@@ -96,6 +99,8 @@ namespace xo {
             ///@}
 
         private:
+            /** parent symbol table from scoping surrounding this one **/
+            DLocalSymtab * parent_ = nullptr;
             /** actual range of slots_[] array.  Can use inices in [0,..,n) **/
             size_type capacity_ = 0;
             /** number of slots in use **/
diff --git a/include/xo/expression2/detail/IExpression_DIfElseExpr.hpp b/include/xo/expression2/detail/IExpression_DIfElseExpr.hpp
index 03500a39..7d726dde 100644
--- a/include/xo/expression2/detail/IExpression_DIfElseExpr.hpp
+++ b/include/xo/expression2/detail/IExpression_DIfElseExpr.hpp
@@ -2,7 +2,7 @@
  *
  *  Generated automagically from ingredients:
  *  1. code generator:
- *       [/Users/roland/proj/xo-umbrella2/xo-facet/codegen/genfacet]
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
  *     arguments:
  *       --input [idl/IExpression_DIfElseExpr.json5]
  *  2. jinja2 template for abstract facet .hpp file:
diff --git a/include/xo/expression2/detail/IGCObject_DVariable.hpp b/include/xo/expression2/detail/IGCObject_DVariable.hpp
index aee612ea..24dc591f 100644
--- a/include/xo/expression2/detail/IGCObject_DVariable.hpp
+++ b/include/xo/expression2/detail/IGCObject_DVariable.hpp
@@ -2,7 +2,7 @@
  *
  *  Generated automagically from ingredients:
  *  1. code generator:
- *       [/Users/roland/proj/xo-umbrella2/xo-facet/codegen/genfacet]
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
  *     arguments:
  *       --input [idl/IGCObject_DVariable.json5]
  *  2. jinja2 template for abstract facet .hpp file:
diff --git a/include/xo/expression2/detail/IPrintable_DIfElseExpr.hpp b/include/xo/expression2/detail/IPrintable_DIfElseExpr.hpp
index e9cf67ff..fcf80fd5 100644
--- a/include/xo/expression2/detail/IPrintable_DIfElseExpr.hpp
+++ b/include/xo/expression2/detail/IPrintable_DIfElseExpr.hpp
@@ -2,7 +2,7 @@
  *
  *  Generated automagically from ingredients:
  *  1. code generator:
- *       [/Users/roland/proj/xo-umbrella2/xo-facet/codegen/genfacet]
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
  *     arguments:
  *       --input [idl/IPrintable_DIfElseExpr.json5]
  *  2. jinja2 template for abstract facet .hpp file:
diff --git a/include/xo/expression2/symtab/IPrintable_DLocalSymtab.hpp b/include/xo/expression2/symtab/IPrintable_DLocalSymtab.hpp
new file mode 100644
index 00000000..c013e937
--- /dev/null
+++ b/include/xo/expression2/symtab/IPrintable_DLocalSymtab.hpp
@@ -0,0 +1,62 @@
+/** @file IPrintable_DLocalSymtab.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/IPrintable_DLocalSymtab.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_repr.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/IPrintable_DLocalSymtab.json5]
+ **/
+
+#pragma once
+
+#include "Printable.hpp"
+#include <xo/printable2/Printable.hpp>
+#include <xo/printable2/detail/IPrintable_Xfer.hpp>
+#include "DLocalSymtab.hpp"
+
+namespace xo { namespace scm { class IPrintable_DLocalSymtab; } }
+
+namespace xo {
+    namespace facet {
+        template <>
+        struct FacetImplementation<xo::print::APrintable,
+                                   xo::scm::DLocalSymtab>
+        {
+            using ImplType = xo::print::IPrintable_Xfer
+              <xo::scm::DLocalSymtab,
+               xo::scm::IPrintable_DLocalSymtab>;
+        };
+    }
+}
+
+namespace xo {
+    namespace scm {
+        /** @class IPrintable_DLocalSymtab
+         **/
+        class IPrintable_DLocalSymtab {
+        public:
+            /** @defgroup scm-printable-dlocalsymtab-type-traits **/
+            ///@{
+            using ppindentinfo = xo::print::APrintable::ppindentinfo;
+            using Copaque = xo::print::APrintable::Copaque;
+            using Opaque = xo::print::APrintable::Opaque;
+            ///@}
+            /** @defgroup scm-printable-dlocalsymtab-methods **/
+            ///@{
+            // const methods
+            /** Pretty-printing support for this object.
+See [xo-indentlog/xo/indentlog/pretty.hpp] **/
+            static bool pretty(const DLocalSymtab & self, const ppindentinfo & ppii);
+
+            // non-const methods
+            ///@}
+        };
+
+    } /*namespace scm*/
+} /*namespace xo*/
+
+/* end */
\ No newline at end of file
diff --git a/include/xo/expression2/symtab/ISymbolTable_DLocalSymtab.hpp b/include/xo/expression2/symtab/ISymbolTable_DLocalSymtab.hpp
new file mode 100644
index 00000000..72f409dd
--- /dev/null
+++ b/include/xo/expression2/symtab/ISymbolTable_DLocalSymtab.hpp
@@ -0,0 +1,60 @@
+/** @file ISymbolTable_DLocalSymtab.hpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/ISymbolTable_DLocalSymtab.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_repr.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/ISymbolTable_DLocalSymtab.json5]
+ **/
+
+#pragma once
+
+#include "SymbolTable.hpp"
+#include "DLocalSymtab.hpp"
+
+namespace xo { namespace scm { class ISymbolTable_DLocalSymtab; } }
+
+namespace xo {
+    namespace facet {
+        template <>
+        struct FacetImplementation<xo::scm::ASymbolTable,
+                                   xo::scm::DLocalSymtab>
+        {
+            using ImplType = xo::scm::ISymbolTable_Xfer
+              <xo::scm::DLocalSymtab,
+               xo::scm::ISymbolTable_DLocalSymtab>;
+        };
+    }
+}
+
+namespace xo {
+    namespace scm {
+        /** @class ISymbolTable_DLocalSymtab
+         **/
+        class ISymbolTable_DLocalSymtab {
+        public:
+            /** @defgroup scm-symboltable-dlocalsymtab-type-traits **/
+            ///@{
+            using Copaque = xo::scm::ASymbolTable::Copaque;
+            using Opaque = xo::scm::ASymbolTable::Opaque;
+            ///@}
+            /** @defgroup scm-symboltable-dlocalsymtab-methods **/
+            ///@{
+            // const methods
+            /** true iff this is toplevel (global) symbol table. **/
+            static bool is_global_symtab(const DLocalSymtab & self) noexcept;
+            /** report ingredients needed to address variable at runtime. **/
+            static Binding lookup_binding(const DLocalSymtab & self, const DUniqueString * sym) noexcept;
+
+            // non-const methods
+            ///@}
+        };
+
+    } /*namespace scm*/
+} /*namespace xo*/
+
+/* end */
\ No newline at end of file
diff --git a/src/expression2/CMakeLists.txt b/src/expression2/CMakeLists.txt
index 03bd8230..8e6565c4 100644
--- a/src/expression2/CMakeLists.txt
+++ b/src/expression2/CMakeLists.txt
@@ -39,6 +39,9 @@ set(SELF_SRCS
 
     ISymbolTable_Any.cpp
 
+    ISymbolTable_DLocalSymtab.cpp
+    IPrintable_DLocalSymtab.cpp
+
     StringTable.cpp
 
     DUniqueString.cpp
diff --git a/src/expression2/DLocalSymtab.cpp b/src/expression2/DLocalSymtab.cpp
index c38096ff..85631d34 100644
--- a/src/expression2/DLocalSymtab.cpp
+++ b/src/expression2/DLocalSymtab.cpp
@@ -5,14 +5,21 @@
 
 #include "DLocalSymtab.hpp"
 #include "DUniqueString.hpp"
+#include <xo/expression2/detail/IPrintable_DVariable.hpp>
+#include <xo/printable2/Printable.hpp>
 #include <xo/indentlog/scope.hpp>
 
 namespace xo {
+    using xo::print::APrintable;
     using xo::facet::typeseq;
+    using xo::print::ppstate;
 
     namespace scm {
 
-        DLocalSymtab::DLocalSymtab(size_type n) : capacity_{n}, size_{0}
+        DLocalSymtab::DLocalSymtab(DLocalSymtab * p,
+                                   size_type n) : parent_{p},
+                                                  capacity_{n},
+                                                  size_{0}
         {
             for (size_type i = 0; i < n; ++i) {
                 void * mem = &slots_[i];
@@ -21,12 +28,14 @@ namespace xo {
         }
 
         DLocalSymtab *
-        DLocalSymtab::_make_empty(obj<AAllocator> mm, size_type n)
+        DLocalSymtab::_make_empty(obj<AAllocator> mm,
+                                  DLocalSymtab * p,
+                                  size_type n)
         {
             void * mem = mm.alloc(typeseq::id<DLocalSymtab>(),
                                   sizeof(DLocalSymtab) + (n * sizeof(Slot)));
 
-            return new (mem) DLocalSymtab(n);
+            return new (mem) DLocalSymtab(p, n);
         }
 
         Binding
@@ -68,6 +77,53 @@ namespace xo {
             return Binding();
         }
 
+        bool
+        DLocalSymtab::pretty(const ppindentinfo & ppii) const
+        {
+            ppstate * pps = ppii.pps();
+
+            if (ppii.upto()) {
+                /* perhaps print on one line */
+                if (!pps->print_upto("<LocalSymtab"))
+                    return false;
+                if (!pps->print_upto(xrefrtag("size", size_)))
+                    return false;
+
+                for (size_type i = 0; i < size_; ++i) {
+                    char buf[32];
+                    snprintf(buf, sizeof(buf), "[%u]", i);
+
+                    assert(slots_[i].var_);
+
+                    obj<APrintable,DVariable> arg_pr(const_cast<DVariable*>(slots_[i].var_));
+
+                    if (!pps->print_upto(xrefrtag(buf, arg_pr)))
+                        return false;
+                }
+
+                pps->write(">");
+                return true;
+            } else {
+                /* with line breaks */
+
+                pps->write("<LocalSymtab");
+                pps->newline_pretty_tag(ppii.ci1(), "size", size_);
+
+                for (size_type i = 0; i < size_; ++i) {
+                    char buf[32];
+                    snprintf(buf, sizeof(buf), "[%u]", i);
+
+                    assert(slots_[i].var_);
+
+                    obj<APrintable,DVariable> arg_pr(const_cast<DVariable *>(slots_[i].var_));
+
+                    pps->newline_pretty_tag(ppii.ci1(), buf, arg_pr);
+                }
+
+                pps->write(">");
+                return false;
+            }
+        }
     } /*namespace scm*/
 } /*namespace xo*/
 
diff --git a/src/expression2/IExpression_DIfElseExpr.cpp b/src/expression2/IExpression_DIfElseExpr.cpp
index 78680310..d913eaf0 100644
--- a/src/expression2/IExpression_DIfElseExpr.cpp
+++ b/src/expression2/IExpression_DIfElseExpr.cpp
@@ -2,7 +2,7 @@
  *
  *  Generated automagically from ingredients:
  *  1. code generator:
- *       [/Users/roland/proj/xo-umbrella2/xo-facet/codegen/genfacet]
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
  *     arguments:
  *       --input [idl/IExpression_DIfElseExpr.json5]
  *  2. jinja2 template for abstract facet .hpp file:
diff --git a/src/expression2/IGCObject_DVariable.cpp b/src/expression2/IGCObject_DVariable.cpp
index 8735b286..4af0f906 100644
--- a/src/expression2/IGCObject_DVariable.cpp
+++ b/src/expression2/IGCObject_DVariable.cpp
@@ -2,7 +2,7 @@
  *
  *  Generated automagically from ingredients:
  *  1. code generator:
- *       [/Users/roland/proj/xo-umbrella2/xo-facet/codegen/genfacet]
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
  *     arguments:
  *       --input [idl/IGCObject_DVariable.json5]
  *  2. jinja2 template for abstract facet .hpp file:
diff --git a/src/expression2/IPrintable_DIfElseExpr.cpp b/src/expression2/IPrintable_DIfElseExpr.cpp
index ec68b9fc..a75cd6a4 100644
--- a/src/expression2/IPrintable_DIfElseExpr.cpp
+++ b/src/expression2/IPrintable_DIfElseExpr.cpp
@@ -2,7 +2,7 @@
  *
  *  Generated automagically from ingredients:
  *  1. code generator:
- *       [/Users/roland/proj/xo-umbrella2/xo-facet/codegen/genfacet]
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
  *     arguments:
  *       --input [idl/IPrintable_DIfElseExpr.json5]
  *  2. jinja2 template for abstract facet .hpp file:
diff --git a/src/expression2/IPrintable_DLocalSymtab.cpp b/src/expression2/IPrintable_DLocalSymtab.cpp
new file mode 100644
index 00000000..dbd4887b
--- /dev/null
+++ b/src/expression2/IPrintable_DLocalSymtab.cpp
@@ -0,0 +1,28 @@
+/** @file IPrintable_DLocalSymtab.cpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/IPrintable_DLocalSymtab.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_any.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/IPrintable_DLocalSymtab.json5]
+**/
+
+#include "symtab/IPrintable_DLocalSymtab.hpp"
+
+namespace xo {
+    namespace scm {
+        auto
+        IPrintable_DLocalSymtab::pretty(const DLocalSymtab & self, const ppindentinfo & ppii) -> bool
+        {
+            return self.pretty(ppii);
+        }
+
+
+    } /*namespace scm*/
+} /*namespace xo*/
+
+/* end IPrintable_DLocalSymtab.cpp */
\ No newline at end of file
diff --git a/src/expression2/ISymbolTable_DLocalSymtab.cpp b/src/expression2/ISymbolTable_DLocalSymtab.cpp
new file mode 100644
index 00000000..778cfdf4
--- /dev/null
+++ b/src/expression2/ISymbolTable_DLocalSymtab.cpp
@@ -0,0 +1,34 @@
+/** @file ISymbolTable_DLocalSymtab.cpp
+ *
+ *  Generated automagically from ingredients:
+ *  1. code generator:
+ *       [/home/roland/proj/xo-umbrella2-claude1/xo-facet/codegen/genfacet]
+ *     arguments:
+ *       --input [idl/ISymbolTable_DLocalSymtab.json5]
+ *  2. jinja2 template for abstract facet .hpp file:
+ *       [iface_facet_any.hpp.j2]
+ *  3. idl for facet methods
+ *       [idl/ISymbolTable_DLocalSymtab.json5]
+**/
+
+#include "symtab/ISymbolTable_DLocalSymtab.hpp"
+
+namespace xo {
+    namespace scm {
+        auto
+        ISymbolTable_DLocalSymtab::is_global_symtab(const DLocalSymtab & self) noexcept -> bool
+        {
+            return self.is_global_symtab();
+        }
+
+        auto
+        ISymbolTable_DLocalSymtab::lookup_binding(const DLocalSymtab & self, const DUniqueString * sym) noexcept -> Binding
+        {
+            return self.lookup_binding(sym);
+        }
+
+
+    } /*namespace scm*/
+} /*namespace xo*/
+
+/* end ISymbolTable_DLocalSymtab.cpp */
\ No newline at end of file
diff --git a/src/expression2/expression2_register_facets.cpp b/src/expression2/expression2_register_facets.cpp
index a6bd50e5..06ccc7d5 100644
--- a/src/expression2/expression2_register_facets.cpp
+++ b/src/expression2/expression2_register_facets.cpp
@@ -27,6 +27,9 @@
 #include <xo/expression2/detail/IExpression_DIfElseExpr.hpp>
 #include <xo/expression2/detail/IPrintable_DIfElseExpr.hpp>
 
+#include <xo/expression2/symtab/ISymbolTable_DLocalSymtab.hpp>
+#include <xo/expression2/symtab/IPrintable_DLocalSymtab.hpp>
+
 #include <xo/gc/detail/AGCObject.hpp>
 #include <xo/printable2/detail/APrintable.hpp>
 #include <xo/facet/FacetRegistry.hpp>
@@ -74,6 +77,9 @@ namespace xo {
             FacetRegistry::register_impl<AExpression, DIfElseExpr>();
             FacetRegistry::register_impl<APrintable, DIfElseExpr>();
 
+            FacetRegistry::register_impl<ASymbolTable, DLocalSymtab>();
+            FacetRegistry::register_impl<APrintable, DLocalSymtab>();
+
             log && log(xtag("DUniqueString.tseq", typeseq::id<DUniqueString>()));
             log && log(xtag("DDefineExpr.tseq", typeseq::id<DDefineExpr>()));
             log && log(xtag("DVariable.tseq", typeseq::id<DVariable>()));
@@ -82,7 +88,10 @@ namespace xo {
             log && log(xtag("DLambdaExpr.tseq", typeseq::id<DLambdaExpr>()));
             log && log(xtag("DIfElseExpr.tseq", typeseq::id<DIfElseExpr>()));
 
+            log && log(xtag("DLocalSymtab.tseq", typeseq::id<DLocalSymtab>()));
+
             log && log(xtag("AExpression.tqseq", typeseq::id<AExpression>()));
+            log && log(xtag("ASymbolTable.tseq", typeseq::id<ASymbolTable>()));
 
             return true;
         }