diff --git a/src/lay/lay/doc/about/25d_view.xml b/src/lay/lay/doc/about/25d_view.xml
index 48a399e15..22438889e 100644
--- a/src/lay/lay/doc/about/25d_view.xml
+++ b/src/lay/lay/doc/about/25d_view.xml
@@ -82,7 +82,7 @@ z(input(2, 0), height: 300.nm)                  # adds layer 2/0 for the next 30
 
   <ul>
     <li><p><tt>z(</tt>layer [, options]<tt>)</tt></p>
-        <p>Extrudes the given layer. "layer" is a (polygon) DRC layer. "options" declare the z extrusion and display parameters.</p>
+        <p>Extrudes the given layer. "layer" is a DRC layer (polygon, edge or even edge pair). "options" declare the z extrusion and display parameters.</p>
     </li>
     <li><p><tt>zz(</tt> [options] <tt>) {</tt> block <tt>}</tt></p>
         <p>Declares a material group which combines multiple "z" statements under a single display group.
diff --git a/src/plugins/tools/view_25d/lay_plugin/built-in-macros/_d25_engine.rb b/src/plugins/tools/view_25d/lay_plugin/built-in-macros/_d25_engine.rb
index e1f1a9654..f1114cc0b 100644
--- a/src/plugins/tools/view_25d/lay_plugin/built-in-macros/_d25_engine.rb
+++ b/src/plugins/tools/view_25d/lay_plugin/built-in-macros/_d25_engine.rb
@@ -108,8 +108,8 @@ module D25
               raise("Duplicate layer argument")
             end
             layer = a
-            if ! layer.data.is_a?(RBA::Region)
-              raise("Expected a polygon layer")
+            if ! layer.data.is_a?(RBA::Region) && ! layer.data.is_a?(RBA::Edges) && ! layer.data.is_a?(RBA::EdgePairs)
+              raise("Expected a polygon, edge or edge pair layer")
             end
 
           elsif a.is_a?(1.class) || a.is_a?(1.0.class)
diff --git a/src/plugins/tools/view_25d/lay_plugin/gsiDeclLayD25View.cc b/src/plugins/tools/view_25d/lay_plugin/gsiDeclLayD25View.cc
index 4f614c1ce..ea7bc880e 100644
--- a/src/plugins/tools/view_25d/lay_plugin/gsiDeclLayD25View.cc
+++ b/src/plugins/tools/view_25d/lay_plugin/gsiDeclLayD25View.cc
@@ -71,6 +71,12 @@ Class<lay::D25View> decl_D25View (QT_EXTERNAL_BASE (QDialog) "lay", "D25View",
   gsi::method ("entry", &lay::D25View::entry, gsi::arg ("data"), gsi::arg ("dbu"), gsi::arg ("zstart"), gsi::arg ("zstop"),
     "@brief Creates a new display entry in the group opened with \\open_display"
   ) +
+  gsi::method ("entry", &lay::D25View::entry_edge, gsi::arg ("data"), gsi::arg ("dbu"), gsi::arg ("zstart"), gsi::arg ("zstop"),
+    "@brief Creates a new display entry in the group opened with \\open_display"
+  ) +
+  gsi::method ("entry", &lay::D25View::entry_edge_pair, gsi::arg ("data"), gsi::arg ("dbu"), gsi::arg ("zstart"), gsi::arg ("zstop"),
+    "@brief Creates a new display entry in the group opened with \\open_display"
+  ) +
   gsi::method ("close_display", &lay::D25View::close_display,
     "@brief Finishes the display group"
   ) +
diff --git a/src/plugins/tools/view_25d/lay_plugin/layD25View.cc b/src/plugins/tools/view_25d/lay_plugin/layD25View.cc
index 91fb79a5c..e01ad1507 100644
--- a/src/plugins/tools/view_25d/lay_plugin/layD25View.cc
+++ b/src/plugins/tools/view_25d/lay_plugin/layD25View.cc
@@ -221,6 +221,22 @@ D25View::entry (const db::Region &data, double dbu, double zstart, double zstop)
   }
 }
 
+void
+D25View::entry_edge (const db::Edges &data, double dbu, double zstart, double zstop)
+{
+  if (! mp_ui->d25_view->has_error ()) {
+    mp_ui->d25_view->entry (data, dbu, zstart, zstop);
+  }
+}
+
+void
+D25View::entry_edge_pair (const db::EdgePairs &data, double dbu, double zstart, double zstop)
+{
+  if (! mp_ui->d25_view->has_error ()) {
+    mp_ui->d25_view->entry (data, dbu, zstart, zstop);
+  }
+}
+
 static void layer_info_to_item (const lay::D25ViewWidget::LayerInfo &info, QListWidgetItem *item, size_t index, QSize icon_size)
 {
   if (info.has_name) {
diff --git a/src/plugins/tools/view_25d/lay_plugin/layD25View.h b/src/plugins/tools/view_25d/lay_plugin/layD25View.h
index e28cd447a..724c14e25 100644
--- a/src/plugins/tools/view_25d/lay_plugin/layD25View.h
+++ b/src/plugins/tools/view_25d/lay_plugin/layD25View.h
@@ -43,6 +43,8 @@ namespace lay
 namespace db
 {
   class Region;
+  class Edges;
+  class EdgePairs;
   struct LayerProperties;
 }
 
@@ -69,6 +71,8 @@ public:
   void open_display (const color_t *frame_color, const color_t *fill_color, const db::LayerProperties *like, const std::string *name);
   void close_display ();
   void entry (const db::Region &data, double dbu, double zstart, double zstop);
+  void entry_edge (const db::Edges &data, double dbu, double zstart, double zstop);
+  void entry_edge_pair (const db::EdgePairs &data, double dbu, double zstart, double zstop);
   void finish ();
 
 protected:
diff --git a/src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.cc b/src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.cc
index 565f5721a..131119032 100644
--- a/src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.cc
+++ b/src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.cc
@@ -31,7 +31,11 @@
 #include "dbPolygonTools.h"
 #include "dbClip.h"
 #include "dbRegion.h"
+#include "dbEdges.h"
+#include "dbEdgePairs.h"
 #include "dbOriginalLayerRegion.h"
+#include "dbOriginalLayerEdges.h"
+#include "dbOriginalLayerEdgePairs.h"
 
 #include "tlException.h"
 #include "tlProgress.h"
@@ -605,7 +609,7 @@ D25ViewWidget::close_display ()
 }
 
 void
-D25ViewWidget::entry (const db::Region &data, double dbu, double zstart, double zstop)
+D25ViewWidget::enter (const db::RecursiveShapeIterator *iter, double zstart, double zstop)
 {
   tl_assert (m_display_open);
 
@@ -621,12 +625,10 @@ D25ViewWidget::entry (const db::Region &data, double dbu, double zstart, double
   LayerInfo &info = m_layers.back ();
 
   //  try to establish a default color from the region's origin if required
-  const db::OriginalLayerRegion *original_region = dynamic_cast<db::OriginalLayerRegion *> (data.delegate ());
   if (mp_view && info.fill_color [3] == 0.0 && info.frame_color [3] == 0.0) {
 
-    if (original_region) {
+    if (iter) {
 
-      const db::RecursiveShapeIterator *iter = original_region->iter ();
       if (iter && iter->layout () && iter->layout ()->is_valid_layer (iter->layer ())) {
 
         db::LayerProperties like = iter->layout ()->get_properties (iter->layer ());
@@ -653,11 +655,56 @@ D25ViewWidget::entry (const db::Region &data, double dbu, double zstart, double
     }
 
   }
+}
+
+void
+D25ViewWidget::entry (const db::Region &data, double dbu, double zstart, double zstop)
+{
+  //  try to establish a default color from the region's origin if required
+  const db::RecursiveShapeIterator *iter = 0;
+  const db::OriginalLayerRegion *original = dynamic_cast<db::OriginalLayerRegion *> (data.delegate ());
+  if (original) {
+    iter = original->iter ();
+  }
+
+  enter (iter, zstart, zstop);
 
   tl::AbsoluteProgress progress (tl::to_string (tr ("Rendering ...")));
   render_region (progress, *m_layers.back ().vertex_chunk, *m_layers.back ().line_chunk, data, dbu, db::CplxTrans (dbu).inverted () * m_bbox, zstart, zstop);
 }
 
+void
+D25ViewWidget::entry (const db::Edges &data, double dbu, double zstart, double zstop)
+{
+  //  try to establish a default color from the region's origin if required
+  const db::RecursiveShapeIterator *iter = 0;
+  const db::OriginalLayerEdges *original = dynamic_cast<db::OriginalLayerEdges *> (data.delegate ());
+  if (original) {
+    iter = original->iter ();
+  }
+
+  enter (iter, zstart, zstop);
+
+  tl::AbsoluteProgress progress (tl::to_string (tr ("Rendering ...")));
+  render_edges (progress, *m_layers.back ().vertex_chunk, *m_layers.back ().line_chunk, data, dbu, db::CplxTrans (dbu).inverted () * m_bbox, zstart, zstop);
+}
+
+void
+D25ViewWidget::entry (const db::EdgePairs &data, double dbu, double zstart, double zstop)
+{
+  //  try to establish a default color from the region's origin if required
+  const db::RecursiveShapeIterator *iter = 0;
+  const db::OriginalLayerEdgePairs *original = dynamic_cast<db::OriginalLayerEdgePairs *> (data.delegate ());
+  if (original) {
+    iter = original->iter ();
+  }
+
+  enter (iter, zstart, zstop);
+
+  tl::AbsoluteProgress progress (tl::to_string (tr ("Rendering ...")));
+  render_edge_pairs (progress, *m_layers.back ().vertex_chunk, *m_layers.back ().line_chunk, data, dbu, db::CplxTrans (dbu).inverted () * m_bbox, zstart, zstop);
+}
+
 void
 D25ViewWidget::finish ()
 {
@@ -750,42 +797,6 @@ D25ViewWidget::render_wall (D25ViewWidget::triangle_chunks_type &chunks, D25View
   line_chunks.add (edge.p1 ().x () * dbu, zstop, edge.p1 ().y () * dbu);
 }
 
-// @@@
-#if 0
-void
-D25ViewWidget::render_layout (tl::AbsoluteProgress &progress, D25ViewWidget::triangle_chunks_type &chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::Layout &layout, const db::Cell &cell, const db::Box &clip_box, unsigned int layer, double zstart, double zstop)
-{
-  std::vector<db::Polygon> poly_heap;
-
-  //  TODO: hidden cells, hierarchy depth ...
-
-  db::RecursiveShapeIterator s (layout, cell, layer, clip_box);
-  s.shape_flags (db::ShapeIterator::Polygons | db::ShapeIterator::Paths | db::ShapeIterator::Boxes);
-  for ( ; ! s.at_end (); ++s) {
-
-    db::Polygon polygon;
-    s->polygon (polygon);
-    polygon.transform (s.trans ());
-
-    poly_heap.clear ();
-    db::clip_poly (polygon, clip_box, poly_heap, false /*keep holes*/);
-
-    for (std::vector<db::Polygon>::const_iterator p = poly_heap.begin (); p != poly_heap.end (); ++p) {
-
-      ++progress;
-
-      render_polygon (chunks, line_chunks, *p, layout.dbu (), zstart, zstop);
-
-      for (db::Polygon::polygon_edge_iterator e = p->begin_edge (); ! e.at_end (); ++e) {
-        render_wall (chunks, line_chunks, *e, layout.dbu (), zstart, zstop);
-      }
-
-    }
-
-  }
-}
-#endif
-
 void
 D25ViewWidget::render_region (tl::AbsoluteProgress &progress, D25ViewWidget::triangle_chunks_type &chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::Region &region, double dbu, const db::Box &clip_box, double zstart, double zstop)
 {
@@ -811,6 +822,43 @@ D25ViewWidget::render_region (tl::AbsoluteProgress &progress, D25ViewWidget::tri
   }
 }
 
+void
+D25ViewWidget::render_edges (tl::AbsoluteProgress &progress, D25ViewWidget::triangle_chunks_type &chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::Edges &edges, double dbu, const db::Box &clip_box, double zstart, double zstop)
+{
+  for (db::Edges::const_iterator e = edges.begin (); !e.at_end (); ++e) {
+
+    ++progress;
+
+    std::pair<bool, db::Edge> ec = e->clipped (clip_box);
+    if (ec.first) {
+      render_wall (chunks, line_chunks, ec.second, dbu, zstart, zstop);
+    }
+
+  }
+}
+
+void
+D25ViewWidget::render_edge_pairs (tl::AbsoluteProgress &progress, D25ViewWidget::triangle_chunks_type &chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::EdgePairs &edge_pairs, double dbu, const db::Box &clip_box, double zstart, double zstop)
+{
+  for (db::EdgePairs::const_iterator e = edge_pairs.begin (); !e.at_end (); ++e) {
+
+    ++progress;
+
+    std::pair<bool, db::Edge> ec;
+
+    ec = e->first ().clipped (clip_box);
+    if (ec.first) {
+      render_wall (chunks, line_chunks, ec.second, dbu, zstart, zstop);
+    }
+
+    ec = e->second ().clipped (clip_box);
+    if (ec.first) {
+      render_wall (chunks, line_chunks, ec.second, dbu, zstart, zstop);
+    }
+
+  }
+}
+
 static std::pair<double, double> find_grid (double v)
 {
   for (int p = -12; p < 12; ++p) {
diff --git a/src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.h b/src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.h
index a553f8122..843a41681 100644
--- a/src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.h
+++ b/src/plugins/tools/view_25d/lay_plugin/layD25ViewWidget.h
@@ -43,6 +43,9 @@
 namespace db
 {
   class Region;
+  class Edges;
+  class EdgePairs;
+  class RecursiveShapeIterator;
   struct LayerProperties;
 }
 
@@ -160,6 +163,8 @@ public:
   void open_display (const color_t *frame_color, const color_t *fill_color, const db::LayerProperties *like, const std::string *name);
   void close_display ();
   void entry (const db::Region &data, double dbu, double zstart, double zstop);
+  void entry (const db::Edges &data, double dbu, double zstart, double zstop);
+  void entry (const db::EdgePairs &data, double dbu, double zstart, double zstop);
   void finish ();
 
 signals:
@@ -200,12 +205,13 @@ private:
   void resizeGL (int w, int h);
 
   void do_initialize_gl ();
-  // @@@ bool prepare_view();
-  // @@@  void render_layout (tl::AbsoluteProgress &progress, D25ViewWidget::triangle_chunks_type &vertex_chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::Layout &layout, const db::Cell &cell, const db::Box &clip_box, unsigned int layer, double zstart, double zstop);
   void render_region (tl::AbsoluteProgress &progress, D25ViewWidget::triangle_chunks_type &vertex_chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::Region &region, double dbu, const db::Box &clip_box, double zstart, double zstop);
+  void render_edges (tl::AbsoluteProgress &progress, D25ViewWidget::triangle_chunks_type &vertex_chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::Edges &region, double dbu, const db::Box &clip_box, double zstart, double zstop);
+  void render_edge_pairs (tl::AbsoluteProgress &progress, D25ViewWidget::triangle_chunks_type &vertex_chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::EdgePairs &region, double dbu, const db::Box &clip_box, double zstart, double zstop);
   void render_polygon (D25ViewWidget::triangle_chunks_type &vertex_chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::Polygon &poly, double dbu, double zstart, double zstop);
   void render_wall (D25ViewWidget::triangle_chunks_type &vertex_chunks, D25ViewWidget::line_chunks_type &line_chunks, const db::Edge &poly, double dbu, double zstart, double zstop);
   void reset_viewport ();
+  void enter (const db::RecursiveShapeIterator *iter, double zstart, double zstop);
 };
 
 }