diff --git a/src/lay/lay/laySession.cc b/src/lay/lay/laySession.cc
index f834856e2..344bee1f8 100644
--- a/src/lay/lay/laySession.cc
+++ b/src/lay/lay/laySession.cc
@@ -30,7 +30,10 @@
 #include "layStream.h"
 #include "tlXMLParser.h"
 #include "tlStream.h"
+#include "tlFileUtils.h"
+#include "tlUri.h"
 #include "dbStream.h"
+#include "dbLayoutToNetlist.h"
 #include "rdb.h"
 
 #include <fstream>
@@ -86,7 +89,16 @@ Session::fetch (const lay::MainWindow &mw)
 
       const rdb::Database *rdb = view->get_rdb (j);
       if (rdb && ! rdb->filename ().empty ()) {
-        view_desc.rdb_filenames.push_back (rdb->filename ());
+        view_desc.rdb_filenames.push_back (tl::InputStream::absolute_path (rdb->filename ()));
+      }
+
+    }
+
+    for (unsigned int j = 0; j < view->num_l2ndbs (); ++j) {
+
+      const db::LayoutToNetlist *l2ndb = view->get_l2ndb (j);
+      if (l2ndb && ! l2ndb->filename ().empty ()) {
+        view_desc.l2ndb_filenames.push_back (tl::InputStream::absolute_path (l2ndb->filename ()));
       }
 
     }
@@ -128,6 +140,17 @@ Session::fetch (const lay::MainWindow &mw)
 
 }
 
+std::string
+Session::make_absolute (const std::string &fp) const
+{
+  tl::URI fp_uri (fp);
+  if (! m_base_dir.empty () && ! tl::is_absolute (fp_uri.path ())) {
+    return tl::URI (m_base_dir).resolved (fp_uri).to_string ();
+  } else {
+    return fp;
+  }
+}
+
 void 
 Session::restore (lay::MainWindow &mw)
 {
@@ -163,11 +186,7 @@ Session::restore (lay::MainWindow &mw)
 
         std::map <std::string, const SessionLayoutDescriptor *>::const_iterator ld = ld_by_name.find (cvd->layout_name);
 
-        std::string fp = ld->second->file_path;
-        QFileInfo fi (tl::to_qstring (fp));
-        if (! m_base_dir.empty () && fi.isRelative ()) {
-          fp = tl::to_string (QDir (tl::to_qstring (m_base_dir)).filePath (tl::to_qstring (ld->second->file_path)));
-        }
+        std::string fp = make_absolute (ld->second->file_path);
 
         bool ok = false;
         if (ld != ld_by_name.end ()) {
@@ -218,13 +237,26 @@ Session::restore (lay::MainWindow &mw)
 
     for (unsigned int j = 0; j < vd.rdb_filenames.size (); ++j) {
 
-      rdb::Database *rdb = new rdb::Database ();
+      std::auto_ptr<rdb::Database> rdb (new rdb::Database ());
 
       try {
-        rdb->load (vd.rdb_filenames[j]);
-        view->add_rdb (rdb);
-      } catch (...) { 
-        delete rdb;
+        rdb->load (make_absolute (vd.rdb_filenames[j]));
+        view->add_rdb (rdb.release ());
+      } catch (tl::Exception &ex) {
+        tl::error << ex.msg ();
+      } catch (...) {
+      }
+
+    }
+
+    for (unsigned int j = 0; j < vd.l2ndb_filenames.size (); ++j) {
+
+      try {
+        db::LayoutToNetlist *l2ndb = db::LayoutToNetlist::create_from_file (make_absolute (vd.l2ndb_filenames [j]));
+        view->add_l2ndb (l2ndb);
+      } catch (tl::Exception &ex) {
+        tl::error << ex.msg ();
+      } catch (...) {
       }
 
     }
@@ -289,6 +321,9 @@ session_structure ()
       tl::make_element<std::vector<std::string>, SessionViewDescriptor> (&SessionViewDescriptor::rdb_filenames, "rdb-files",
         tl::make_member<std::string, std::vector<std::string>::const_iterator, std::vector<std::string> > (&std::vector<std::string>::begin, &std::vector<std::string>::end, &std::vector<std::string>::push_back, "rdb-file")
       ) +
+      tl::make_element<std::vector<std::string>, SessionViewDescriptor> (&SessionViewDescriptor::l2ndb_filenames, "l2ndb-files",
+        tl::make_member<std::string, std::vector<std::string>::const_iterator, std::vector<std::string> > (&std::vector<std::string>::begin, &std::vector<std::string>::end, &std::vector<std::string>::push_back, "l2ndb-file")
+      ) +
       //  for backward compatibility:
       tl::make_element<lay::LayerPropertiesList, SessionViewDescriptor> (&SessionViewDescriptor::set_layer_properties, "layer-properties", lay::LayerPropertiesList::xml_format ()) +
       tl::make_member<unsigned int, SessionViewDescriptor> (&SessionViewDescriptor::current_layer_list, "current-layer-property-tab") +
diff --git a/src/lay/lay/laySession.h b/src/lay/lay/laySession.h
index e2ae4a9a9..0b06186ee 100644
--- a/src/lay/lay/laySession.h
+++ b/src/lay/lay/laySession.h
@@ -112,6 +112,7 @@ struct SessionViewDescriptor
   std::vector<lay::LayerPropertiesList> layer_properties_lists;
   unsigned int current_layer_list;
   std::vector<std::string> rdb_filenames;
+  std::vector<std::string> l2ndb_filenames;
   SessionCellViewDescriptors cellviews;
   SessionAnnotationShapes annotation_shapes;
   int active_cellview;
@@ -174,6 +175,8 @@ private:
   std::string m_window_state;
   std::string m_window_geometry;
   std::string m_base_dir;
+
+  std::string make_absolute (const std::string &fp) const;
 };
 
 }
diff --git a/src/lay/unit_tests/laySessionTests.cc b/src/lay/unit_tests/laySessionTests.cc
new file mode 100644
index 000000000..c62f8169c
--- /dev/null
+++ b/src/lay/unit_tests/laySessionTests.cc
@@ -0,0 +1,171 @@
+
+/*
+
+  KLayout Layout Viewer
+  Copyright (C) 2006-2019 Matthias Koefferlein
+
+  This program is free software; you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
+
+
+#include "laySession.h"
+#include "layMainWindow.h"
+#include "layLayoutView.h"
+#include "tlUnitTest.h"
+#include "dbLayoutToNetlist.h"
+#include "dbLayoutVsSchematic.h"
+#include "rdb.h"
+#include "antObject.h"
+#include "antService.h"
+#include "imgObject.h"
+#include "imgService.h"
+#include "tlFileUtils.h"
+
+TEST (1)
+{
+  lay::MainWindow *mw = lay::MainWindow::instance ();
+  tl_assert (mw != 0);
+
+  mw->close_all ();
+
+  mw->load_layout (tl::testsrc () + "/testdata/sessions/test.gds");
+
+  lay::LayoutView *view = mw->current_view ();
+
+  ant::Service *ant_service = view->get_plugin <ant::Service> ();
+  tl_assert (ant_service != 0);
+  if (ant_service) {
+    ant::Object ruler;
+    ruler.fmt ("Hello, world!");
+    ant_service->insert_ruler (ruler, false /*do not observe the ruler count limit*/);
+  }
+
+  img::Service *img_service = view->get_plugin <img::Service> ();
+  tl_assert (img_service != 0);
+  if (img_service) {
+    img::Object img;
+    img.load_data (tl::testsrc () + "/testdata/sessions/test.png");
+    img_service->insert_image (img);
+  }
+
+  std::auto_ptr<rdb::Database> rdb (new rdb::Database ());
+  rdb->load (tl::testsrc () + "/testdata/sessions/test.lyrdb");
+  view->add_rdb (rdb.release ());
+
+  std::auto_ptr<db::LayoutToNetlist> l2ndb (db::LayoutToNetlist::create_from_file (tl::testsrc () + "/testdata/sessions/test.l2n"));
+  view->add_l2ndb (l2ndb.release ());
+
+  std::auto_ptr<db::LayoutToNetlist> lvsdb (db::LayoutToNetlist::create_from_file (tl::testsrc () + "/testdata/sessions/test.lvsdb"));
+  view->add_l2ndb (lvsdb.release ());
+
+  std::string lys_file = tmp_file ("test1.lys");
+  mw->save_session (lys_file);
+
+  mw->close_all ();
+
+  EXPECT_EQ (mw->views (), (unsigned int) 0);
+  mw->restore_session (lys_file);
+
+  EXPECT_EQ (mw->views (), (unsigned int) 1);
+
+  view = mw->current_view ();
+  tl_assert (view != 0);
+
+  ant_service = view->get_plugin <ant::Service> ();
+  tl_assert (ant_service != 0);
+  if (ant_service) {
+    ant::AnnotationIterator a = ant_service->begin_annotations ();
+    EXPECT_EQ (a.at_end (), false);
+    if (! a.at_end ()) {
+      EXPECT_EQ (a->fmt (), "Hello, world!");
+      ++a;
+      EXPECT_EQ (a.at_end (), true);
+    }
+  }
+
+  img_service = view->get_plugin <img::Service> ();
+  tl_assert (img_service != 0);
+  if (img_service) {
+    img::ImageIterator i = img_service->begin_images ();
+    EXPECT_EQ (i.at_end (), false);
+    if (! i.at_end ()) {
+      EXPECT_EQ (i->width (), (unsigned int) 256);
+      EXPECT_EQ (i->height (), (unsigned int) 256);
+      ++i;
+      EXPECT_EQ (i.at_end (), true);
+    }
+  }
+
+  EXPECT_EQ (view->num_l2ndbs (), (unsigned int) 2);
+  EXPECT_EQ (tl::filename (view->get_l2ndb (0)->filename ()), "test.l2n");
+  EXPECT_EQ (tl::filename (view->get_l2ndb (1)->filename ()), "test.lvsdb");
+  EXPECT_EQ (dynamic_cast <db::LayoutVsSchematic *> (view->get_l2ndb (1)) != 0, true);
+
+  EXPECT_EQ (view->num_rdbs (), (unsigned int) 1);
+  EXPECT_EQ (tl::filename (view->get_rdb (0)->filename ()), "test.lyrdb");
+}
+
+//  issue-353 (all paths relative to .lys file)
+TEST (2)
+{
+  lay::MainWindow *mw = lay::MainWindow::instance ();
+  tl_assert (mw != 0);
+
+  mw->close_all ();
+
+  mw->close_all ();
+
+  EXPECT_EQ (mw->views (), (unsigned int) 0);
+  mw->restore_session (tl::testsrc () + "/testdata/sessions/test_with_relative_paths.lys");
+
+  EXPECT_EQ (mw->views (), (unsigned int) 1);
+
+  lay::LayoutView *view = mw->current_view ();
+  tl_assert (view != 0);
+
+  ant::Service *ant_service = view->get_plugin <ant::Service> ();
+  tl_assert (ant_service != 0);
+  if (ant_service) {
+    ant::AnnotationIterator a = ant_service->begin_annotations ();
+    EXPECT_EQ (a.at_end (), false);
+    if (! a.at_end ()) {
+      EXPECT_EQ (a->fmt (), "Hello, world!");
+      ++a;
+      EXPECT_EQ (a.at_end (), true);
+    }
+  }
+
+  img::Service *img_service = view->get_plugin <img::Service> ();
+  tl_assert (img_service != 0);
+  if (img_service) {
+    img::ImageIterator i = img_service->begin_images ();
+    EXPECT_EQ (i.at_end (), false);
+    if (! i.at_end ()) {
+      EXPECT_EQ (i->width (), (unsigned int) 256);
+      EXPECT_EQ (i->height (), (unsigned int) 256);
+      ++i;
+      EXPECT_EQ (i.at_end (), true);
+    }
+  }
+
+  EXPECT_EQ (view->num_l2ndbs (), (unsigned int) 2);
+  EXPECT_EQ (tl::filename (view->get_l2ndb (0)->filename ()), "test.l2n");
+  EXPECT_EQ (tl::filename (view->get_l2ndb (1)->filename ()), "test.lvsdb");
+  EXPECT_EQ (dynamic_cast <db::LayoutVsSchematic *> (view->get_l2ndb (1)) != 0, true);
+
+  EXPECT_EQ (view->num_rdbs (), (unsigned int) 1);
+  EXPECT_EQ (tl::filename (view->get_rdb (0)->filename ()), "test.lyrdb");
+}
diff --git a/src/lay/unit_tests/unit_tests.pro b/src/lay/unit_tests/unit_tests.pro
index 3591a4a7f..dc5315166 100644
--- a/src/lay/unit_tests/unit_tests.pro
+++ b/src/lay/unit_tests/unit_tests.pro
@@ -8,9 +8,10 @@ include($$PWD/../../lib_ut.pri)
 
 SOURCES = \
   laySalt.cc \
+    laySessionTests.cc
 
-INCLUDEPATH += $$LAY_INC $$TL_INC $$LAYBASIC_INC $$DB_INC $$GSI_INC
-DEPENDPATH += $$LAY_INC $$TL_INC $$LAYBASIC_INC $$DB_INC $$GSI_INC
+INCLUDEPATH += $$LAY_INC $$TL_INC $$LAYBASIC_INC $$DB_INC $$GSI_INC $$ANT_INC $$IMG_INC $$RDB_INC
+DEPENDPATH += $$LAY_INC $$TL_INC $$LAYBASIC_INC $$DB_INC $$GSI_INC $$ANT_INC $$IMG_INC $$RDB_INC
 
-LIBS += -L$$DESTDIR_UT -lklayout_lay -lklayout_laybasic -lklayout_db -lklayout_tl -lklayout_gsi
+LIBS += -L$$DESTDIR_UT -lklayout_lay -lklayout_laybasic -lklayout_db -lklayout_tl -lklayout_gsi -lklayout_ant -lklayout_img -lklayout_rdb
 
diff --git a/testdata/sessions/test.gds b/testdata/sessions/test.gds
new file mode 100644
index 000000000..c6a7aac64
Binary files /dev/null and b/testdata/sessions/test.gds differ
diff --git a/testdata/sessions/test.l2n b/testdata/sessions/test.l2n
new file mode 100644
index 000000000..81bda92f4
--- /dev/null
+++ b/testdata/sessions/test.l2n
@@ -0,0 +1,837 @@
+#%l2n-klayout
+top(RINGO)
+unit(0.001)
+
+# Layer section
+# This section lists the mask layers (drawing or derived) and their connections.
+
+# Mask layers
+layer($3 '3/0')
+layer($9 '3/1')
+layer($4 '4/0')
+layer($5 '5/0')
+layer($6 '6/0')
+layer($10 '6/1')
+layer($7 '7/0')
+layer($8 '8/0')
+layer($11 '8/1')
+layer($1)
+layer($2)
+
+# Mask layer connectivity
+connect($3 $3 $9 $5)
+connect($9 $3)
+connect($4 $4 $6 $1 $2)
+connect($5 $3 $5 $6)
+connect($6 $4 $5 $6 $10 $7)
+connect($10 $6)
+connect($7 $6 $7 $8)
+connect($8 $7 $8 $11)
+connect($11 $8)
+connect($1 $4 $1)
+connect($2 $4 $2)
+
+# Device class section
+class(PMOS MOS3)
+class(NMOS MOS3)
+
+# Device abstracts section
+# Device abstracts list the pin shapes of the devices.
+device(D$PMOS PMOS
+ terminal(S
+  rect($1 (-650 -475) (525 950))
+ )
+ terminal(G
+  rect($3 (-125 -475) (250 950))
+ )
+ terminal(D
+  rect($1 (125 -475) (550 950))
+ )
+)
+device(D$PMOS$1 PMOS
+ terminal(S
+  rect($1 (-675 -475) (550 950))
+ )
+ terminal(G
+  rect($3 (-125 -475) (250 950))
+ )
+ terminal(D
+  rect($1 (125 -475) (525 950))
+ )
+)
+device(D$PMOS$2 PMOS
+ terminal(S
+  rect($1 (-475 -650) (950 525))
+ )
+ terminal(G
+  rect($3 (-475 -125) (950 250))
+ )
+ terminal(D
+  rect($1 (-475 125) (950 525))
+ )
+)
+device(D$PMOS$3 PMOS
+ terminal(S
+  rect($1 (-650 -475) (525 950))
+ )
+ terminal(G
+  rect($3 (-125 -475) (250 950))
+ )
+ terminal(D
+  rect($1 (125 -475) (525 950))
+ )
+)
+device(D$NMOS NMOS
+ terminal(S
+  rect($2 (-650 -475) (525 950))
+ )
+ terminal(G
+  rect($3 (-125 -475) (250 950))
+ )
+ terminal(D
+  rect($2 (125 -475) (550 950))
+ )
+)
+device(D$NMOS$1 NMOS
+ terminal(S
+  rect($2 (-675 -475) (550 950))
+ )
+ terminal(G
+  rect($3 (-125 -475) (250 950))
+ )
+ terminal(D
+  rect($2 (125 -475) (525 950))
+ )
+)
+device(D$NMOS$2 NMOS
+ terminal(S
+  rect($2 (-475 -650) (950 525))
+ )
+ terminal(G
+  rect($3 (-475 -125) (950 250))
+ )
+ terminal(D
+  rect($2 (-475 125) (950 525))
+ )
+)
+device(D$NMOS$3 NMOS
+ terminal(S
+  rect($2 (-650 -475) (525 950))
+ )
+ terminal(G
+  rect($3 (-125 -475) (250 950))
+ )
+ terminal(D
+  rect($2 (125 -475) (525 950))
+ )
+)
+
+# Circuit section
+# Circuits are the hierarchical building blocks of the netlist.
+circuit(INV2X
+
+ # Nets with their geometries
+ net(1
+  rect($3 (-125 700) (250 1500))
+  rect($3 (-125 -1000) (800 500))
+  rect($3 (-125 -1000) (250 1500))
+  rect($3 (-250 -100) (250 1600))
+  rect($3 (-1050 -1600) (250 1600))
+  rect($3 (550 -4500) (250 1600))
+  rect($3 (-1050 -1600) (250 1600))
+ )
+ net(2
+  rect($4 (1090 2590) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (1310 -690) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($7 (-290 -290) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($7 (1380 180) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($8 (-2410 -510) (3000 1200))
+  rect($1 (-975 -1075) (525 950))
+  rect($1 (-2100 -950) (525 950))
+ )
+ net(3
+  rect($4 (1090 -310) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (1310 -690) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($7 (-290 -290) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($7 (1380 180) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($8 (-2410 -510) (3000 1200))
+  rect($2 (-975 -1075) (525 950))
+  rect($2 (-2100 -950) (525 950))
+ )
+ net(4
+  rect($4 (290 2590) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (-290 -10) (360 2300))
+  rect($6 (-360 -80) (360 760))
+  rect($6 (-360 -760) (360 760))
+  rect($6 (-360 -3660) (360 760))
+  rect($6 (-360 -760) (360 760))
+  rect($1 (-455 2045) (550 950))
+  rect($2 (-550 -3850) (550 950))
+ )
+
+ # Outgoing pins and their connections to nets
+ pin(1)
+ pin(2)
+ pin(3)
+ pin(4)
+
+ # Devices and their connections
+ device(1 D$PMOS
+  device(D$PMOS$1 location(800 0))
+  connect(0 S S)
+  connect(1 S D)
+  connect(0 G G)
+  connect(1 G G)
+  connect(0 D D)
+  connect(1 D S)
+  location(0 2900)
+  param(L 0.25)
+  param(W 1.9)
+  param(AS 0.76)
+  param(AD 0.76)
+  param(PS 4.45)
+  param(PD 4.45)
+  terminal(S 2)
+  terminal(G 1)
+  terminal(D 4)
+ )
+ device(3 D$NMOS
+  device(D$NMOS$1 location(800 0))
+  connect(0 S S)
+  connect(1 S D)
+  connect(0 G G)
+  connect(1 G G)
+  connect(0 D D)
+  connect(1 D S)
+  location(0 0)
+  param(L 0.25)
+  param(W 1.9)
+  param(AS 0.76)
+  param(AD 0.76)
+  param(PS 4.45)
+  param(PD 4.45)
+  terminal(S 3)
+  terminal(G 1)
+  terminal(D 4)
+ )
+
+)
+circuit(NAND1X
+
+ # Nets with their geometries
+ net(1
+  rect($4 (290 2590) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (580 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (-290 -310) (360 1500))
+  rect($6 (-1160 -400) (1160 400))
+  rect($6 (-1160 -400) (360 1500))
+  rect($6 (-360 -80) (360 760))
+  rect($6 (-360 -760) (360 760))
+  rect($6 (440 -3660) (360 760))
+  rect($1 (-1255 2045) (550 950))
+  rect($2 (250 -3850) (525 950))
+ )
+ net(2
+  rect($4 (1090 2590) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (1310 -690) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($7 (-290 -290) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($7 (1380 180) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($8 (-2410 -510) (3000 1200))
+  rect($1 (-975 -1075) (525 950))
+  rect($1 (-2100 -950) (525 950))
+ )
+ net(3
+  rect($4 (-510 -310) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (-290 -690) (360 760))
+  rect($7 (-290 -290) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($8 (-810 -510) (3000 1200))
+  rect($2 (-2550 -1075) (525 950))
+ )
+ net(4
+  rect($3 (-125 700) (250 1500))
+  rect($3 (-250 -100) (250 1600))
+  rect($3 (-250 -4500) (250 1600))
+ )
+ net(5
+  rect($3 (675 700) (250 1500))
+  rect($3 (-250 -100) (250 1600))
+  rect($3 (-250 -4500) (250 1600))
+ )
+ net(6
+  rect($4 (290 -310) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (-290 -690) (360 760))
+  rect($6 (-360 -760) (360 760))
+  rect($2 (-455 -855) (550 950))
+ )
+
+ # Outgoing pins and their connections to nets
+ pin(1)
+ pin(2)
+ pin(3)
+ pin(4)
+ pin(5)
+
+ # Devices and their connections
+ device(1 D$PMOS
+  location(0 2900)
+  param(L 0.25)
+  param(W 0.95)
+  param(AS 0.49875)
+  param(AD 0.26125)
+  param(PS 2.95)
+  param(PD 1.5)
+  terminal(S 2)
+  terminal(G 4)
+  terminal(D 1)
+ )
+ device(2 D$PMOS$1
+  location(800 2900)
+  param(L 0.25)
+  param(W 0.95)
+  param(AS 0.26125)
+  param(AD 0.49875)
+  param(PS 1.5)
+  param(PD 2.95)
+  terminal(S 1)
+  terminal(G 5)
+  terminal(D 2)
+ )
+ device(3 D$NMOS
+  location(0 0)
+  param(L 0.25)
+  param(W 0.95)
+  param(AS 0.49875)
+  param(AD 0.26125)
+  param(PS 2.95)
+  param(PD 1.5)
+  terminal(S 3)
+  terminal(G 4)
+  terminal(D 6)
+ )
+ device(4 D$NMOS$1
+  location(800 0)
+  param(L 0.25)
+  param(W 0.95)
+  param(AS 0.26125)
+  param(AD 0.49875)
+  param(PS 1.5)
+  param(PD 2.95)
+  terminal(S 6)
+  terminal(G 5)
+  terminal(D 1)
+ )
+
+)
+circuit(INV2ALT
+
+ # Nets with their geometries
+ net(1
+  rect($3 (675 600) (250 2300))
+  rect($3 (-250 0) (1050 200))
+  rect($3 (-1725 -1900) (800 500))
+  rect($3 (700 1400) (225 1300))
+  rect($3 (-1850 -3700) (250 1500))
+  rect($3 (-250 -3000) (250 1600))
+  rect($3 (775 -225) (1600 250))
+  rect($3 (-2400 3350) (1600 250))
+  rect($3 (-1825 -2325) (250 1600))
+ )
+ net(2
+  rect($4 (290 -310) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 2280) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (880 -2220) (220 220))
+  rect($4 (180 -220) (220 220))
+  rect($4 (-1020 2580) (220 220))
+  rect($4 (-620 -220) (220 220))
+  rect($6 (-590 -3710) (360 3800))
+  rect($6 (-180 -3200) (920 380))
+  rect($6 (-1100 -1660) (360 760))
+  rect($6 (-360 2140) (360 760))
+  rect($6 (740 -2360) (760 360))
+  rect($6 (-1560 2440) (760 360))
+  rect($1 (-855 -430) (950 525))
+  rect($1 (-1250 -1750) (525 950))
+  rect($2 (575 -2550) (950 525))
+  rect($2 (-2050 -1825) (525 950))
+ )
+ net(3
+  rect($4 (990 4590) (220 220))
+  rect($4 (-620 -220) (220 220))
+  rect($4 (-1320 -2220) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (810 1310) (760 360))
+  rect($6 (-1860 -2360) (360 760))
+  rect($7 (-290 -290) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($7 (880 1780) (220 220))
+  rect($7 (180 -220) (220 220))
+  polygon($8 (-5510 -2510) (0 1200) (3100 0) (0 1800) (3800 0) (0 -1800) (2100 0) (0 -1200) (-2900 0) (0 2200) (-2000 0) (0 -2200))
+  rect($1 (625 2125) (950 525))
+  rect($1 (-2025 -2525) (525 950))
+ )
+ net(4
+  rect($4 (1390 190) (220 220))
+  rect($4 (180 -220) (220 220))
+  rect($4 (-2520 -720) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (1610 -190) (760 360))
+  rect($6 (-2660 -860) (360 760))
+  rect($7 (-290 -290) (220 220))
+  rect($7 (-220 -620) (220 220))
+  rect($7 (1680 280) (220 220))
+  rect($7 (180 -220) (220 220))
+  rect($8 (-6310 -1010) (9000 1200))
+  rect($2 (-3475 -550) (950 525))
+  rect($2 (-2825 -1050) (525 950))
+ )
+
+ # Outgoing pins and their connections to nets
+ pin(1)
+ pin(2)
+ pin(3)
+ pin(4)
+
+ # Devices and their connections
+ device(1 D$PMOS$2
+  device(D$PMOS$3 location(-900 -1400))
+  connect(0 S S)
+  connect(1 S D)
+  connect(0 G G)
+  connect(1 G G)
+  connect(0 D D)
+  connect(1 D S)
+  location(900 4300)
+  param(L 0.25)
+  param(W 1.9)
+  param(AS 0.9975)
+  param(AD 0.9975)
+  param(PS 5.9)
+  param(PD 5.9)
+  terminal(S 2)
+  terminal(G 1)
+  terminal(D 3)
+ )
+ device(3 D$NMOS$2
+  device(D$NMOS$3 location(-1700 -700))
+  connect(0 S S)
+  connect(1 S S)
+  connect(0 G G)
+  connect(1 G G)
+  connect(0 D D)
+  connect(1 D D)
+  location(1700 700)
+  param(L 0.25)
+  param(W 1.9)
+  param(AS 0.9975)
+  param(AD 0.9975)
+  param(PS 5.9)
+  param(PD 5.9)
+  terminal(S 4)
+  terminal(G 1)
+  terminal(D 2)
+ )
+
+)
+circuit(RINGO
+
+ # Nets with their geometries
+ net(1
+  rect($3 (1700 1100) (1300 400))
+  rect($4 (-2710 1090) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (1290 890) (200 200))
+  rect($6 (-1500 -300) (1600 400))
+ )
+ net(2
+  rect($3 (4700 1100) (1300 400))
+  rect($4 (-2710 1090) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (1290 890) (200 200))
+  rect($6 (-1500 -300) (1600 400))
+ )
+ net(3
+  rect($3 (15000 1100) (1300 400))
+  rect($4 (-4910 -1810) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 2280) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (880 -2220) (220 220))
+  rect($4 (180 -220) (220 220))
+  rect($4 (-1020 2580) (220 220))
+  rect($4 (-620 -220) (220 220))
+  rect($5 (3190 -2810) (200 200))
+  rect($6 (-2400 -300) (2500 400))
+ )
+ net(4
+  rect($3 (18000 1100) (1300 400))
+  rect($4 (-2710 1090) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (1290 890) (200 200))
+  rect($6 (-1500 -300) (1600 400))
+ )
+ net(5
+  rect($3 (21000 1100) (1300 400))
+  rect($4 (-2710 1090) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (1290 890) (200 200))
+  rect($6 (-1500 -300) (1600 400))
+ )
+ net(6
+  rect($3 (24000 1100) (1300 400))
+  rect($4 (-2710 1090) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (1290 890) (200 200))
+  rect($6 (-1500 -300) (1600 400))
+ )
+ net(7
+  rect($3 (27000 1100) (1300 400))
+  rect($4 (-2710 1090) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (1290 890) (200 200))
+  rect($6 (-1500 -300) (1600 400))
+ )
+ net(8 name(FB)
+  rect($3 (30000 1100) (1300 400))
+  rect($3 (-33375 100) (1275 400))
+  rect($4 (29390 590) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (1290 890) (200 200))
+  rect($5 (-31400 300) (200 200))
+  rect($6 (29700 -800) (1600 400))
+  rect($6 (-31600 100) (400 400))
+  rect($7 (30900 -800) (200 200))
+  rect($7 (-31400 300) (200 200))
+  rect($8 (-300 -800) (31600 400))
+  rect($8 (-31600 -400) (400 900))
+  rect($11 (16399 -701) (2 2))
+ )
+ net(9
+  rect($3 (-1300 900) (1300 400))
+  rect($4 (-2710 1290) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (580 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (490 690) (200 200))
+  rect($6 (-800 -300) (900 400))
+ )
+ net(10 name(EN)
+  rect($3 (-4000 1200) (875 500))
+  rect($9 (-476 -201) (2 2))
+ )
+ net(11
+  rect($3 (9800 1100) (1300 400))
+  rect($4 (-4810 1090) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($5 (3390 890) (200 200))
+  rect($6 (-3600 -300) (3700 400))
+ )
+ net(12 name(OUT)
+  rect($4 (31590 2590) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -3520) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($10 (-111 589) (2 2))
+ )
+ net(13 name(VDD)
+  rect($4 (4090 2590) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1620 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1620 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (10380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (6380 1380) (220 220))
+  rect($4 (-620 -220) (220 220))
+  rect($4 (-1320 -2220) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (6580 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (-26990 -690) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (-1760 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (-1760 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (10240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (5840 1240) (760 360))
+  rect($6 (-1860 -2360) (360 760))
+  rect($6 (6440 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($11 (-881 -381) (2 2))
+ )
+ net(14 name(VSS)
+  rect($4 (4090 -310) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1620 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-3220 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (10380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (6780 -120) (220 220))
+  rect($4 (180 -220) (220 220))
+  rect($4 (-2520 -720) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (6580 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (4380 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($4 (-1820 -620) (220 220))
+  rect($4 (-220 180) (220 220))
+  rect($6 (-26990 -690) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (-1760 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (-3360 -760) (360 760))
+  rect($6 (10240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (6640 -260) (760 360))
+  rect($6 (-2660 -860) (360 760))
+  rect($6 (6440 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($6 (4240 -760) (360 760))
+  rect($6 (-1960 -760) (360 760))
+  rect($11 (-881 -381) (2 2))
+ )
+
+ # Outgoing pins and their connections to nets
+ pin(8 name(FB))
+ pin(10 name(EN))
+ pin(12 name(OUT))
+ pin(13 name(VDD))
+ pin(14 name(VSS))
+
+ # Subcircuits and their connections
+ circuit(1 INV2X location(0 0)
+  pin(0 9)
+  pin(1 13)
+  pin(2 14)
+  pin(3 1)
+ )
+ circuit(2 INV2X location(3000 0)
+  pin(0 1)
+  pin(1 13)
+  pin(2 14)
+  pin(3 2)
+ )
+ circuit(3 INV2X location(6000 0)
+  pin(0 2)
+  pin(1 13)
+  pin(2 14)
+  pin(3 11)
+ )
+ circuit(4 INV2ALT location(11100 0)
+  pin(0 11)
+  pin(1 3)
+  pin(2 13)
+  pin(3 14)
+ )
+ circuit(5 INV2X location(16300 0)
+  pin(0 3)
+  pin(1 13)
+  pin(2 14)
+  pin(3 4)
+ )
+ circuit(6 INV2X location(19300 0)
+  pin(0 4)
+  pin(1 13)
+  pin(2 14)
+  pin(3 5)
+ )
+ circuit(7 INV2X location(22300 0)
+  pin(0 5)
+  pin(1 13)
+  pin(2 14)
+  pin(3 6)
+ )
+ circuit(8 INV2X location(25300 0)
+  pin(0 6)
+  pin(1 13)
+  pin(2 14)
+  pin(3 7)
+ )
+ circuit(9 INV2X location(28300 0)
+  pin(0 7)
+  pin(1 13)
+  pin(2 14)
+  pin(3 8)
+ )
+ circuit(10 NAND1X location(-3000 0)
+  pin(0 9)
+  pin(1 13)
+  pin(2 14)
+  pin(3 10)
+  pin(4 8)
+ )
+ circuit(11 INV2X location(31300 0)
+  pin(0 8)
+  pin(1 13)
+  pin(2 14)
+  pin(3 12)
+ )
+
+)
diff --git a/testdata/sessions/test.lvsdb b/testdata/sessions/test.lvsdb
new file mode 100644
index 000000000..58faa611b
--- /dev/null
+++ b/testdata/sessions/test.lvsdb
@@ -0,0 +1,1002 @@
+#%lvsdb-klayout
+
+# Layout
+layout(
+ top(RINGO)
+ unit(0.001)
+
+ # Layer section
+ # This section lists the mask layers (drawing or derived) and their connections.
+
+ # Mask layers
+ layer(bulk '1/0')
+ layer(nwell '1/0')
+ layer(poly '3/0')
+ layer(poly_lbl '3/1')
+ layer(diff_cont '4/0')
+ layer(poly_cont '5/0')
+ layer(metal1 '6/0')
+ layer(metal1_lbl '6/1')
+ layer(via1 '7/0')
+ layer(metal2 '8/0')
+ layer(metal2_lbl '8/1')
+ layer(ntie)
+ layer(psd)
+ layer(ptie)
+ layer(nsd)
+
+ # Mask layer connectivity
+ connect(nwell nwell ntie)
+ connect(poly poly poly_lbl poly_cont)
+ connect(poly_lbl poly)
+ connect(diff_cont diff_cont metal1 ntie psd ptie nsd)
+ connect(poly_cont poly poly_cont metal1)
+ connect(metal1 diff_cont poly_cont metal1 metal1_lbl via1)
+ connect(metal1_lbl metal1)
+ connect(via1 metal1 via1 metal2)
+ connect(metal2 via1 metal2 metal2_lbl)
+ connect(metal2_lbl metal2)
+ connect(ntie nwell diff_cont ntie)
+ connect(psd diff_cont psd)
+ connect(ptie diff_cont ptie)
+ connect(nsd diff_cont nsd)
+
+ # Global nets and connectivity
+ global(bulk BULK)
+ global(ptie BULK)
+
+ # Device class section
+ class(PMOS MOS4)
+ class(NMOS MOS4)
+
+ # Device abstracts section
+ # Device abstracts list the pin shapes of the devices.
+ device(D$PMOS PMOS
+  terminal(S
+   rect(psd (-650 -875) (525 1750))
+  )
+  terminal(G
+   rect(poly (-125 -875) (250 1750))
+  )
+  terminal(D
+   rect(psd (125 -875) (550 1750))
+  )
+  terminal(B
+   rect(nwell (-125 -875) (250 1750))
+  )
+ )
+ device(D$PMOS$1 PMOS
+  terminal(S
+   rect(psd (-675 -875) (550 1750))
+  )
+  terminal(G
+   rect(poly (-125 -875) (250 1750))
+  )
+  terminal(D
+   rect(psd (125 -875) (525 1750))
+  )
+  terminal(B
+   rect(nwell (-125 -875) (250 1750))
+  )
+ )
+ device(D$NMOS NMOS
+  terminal(S
+   rect(nsd (-650 -875) (525 1750))
+  )
+  terminal(G
+   rect(poly (-125 -875) (250 1750))
+  )
+  terminal(D
+   rect(nsd (125 -875) (550 1750))
+  )
+  terminal(B
+   rect(bulk (-125 -875) (250 1750))
+  )
+ )
+ device(D$NMOS$1 NMOS
+  terminal(S
+   rect(nsd (-675 -875) (550 1750))
+  )
+  terminal(G
+   rect(poly (-125 -875) (250 1750))
+  )
+  terminal(D
+   rect(nsd (125 -875) (525 1750))
+  )
+  terminal(B
+   rect(bulk (-125 -875) (250 1750))
+  )
+ )
+
+ # Circuit section
+ # Circuits are the hierarchical building blocks of the netlist.
+ circuit(INV2
+
+  # Circuit boundary
+  rect((-1700 -2440) (3100 7820))
+
+  # Nets with their geometries
+  net(1
+   rect(nwell (-1400 1800) (2800 3580))
+   rect(diff_cont (-1510 -650) (220 220))
+   rect(ntie (-510 -450) (800 680))
+  )
+  net(2 name(IN)
+   rect(poly (-525 -250) (250 2500))
+   rect(poly (-1425 -630) (2100 360))
+   rect(poly (-125 -2230) (250 2500))
+   rect(poly (-1050 -3850) (250 2400))
+   rect(poly (550 1200) (250 2400))
+   rect(poly (-250 -6000) (250 2400))
+   rect(poly (-1050 1200) (250 2400))
+   rect(poly_lbl (-526 -2601) (2 2))
+   rect(poly_cont (-831 -111) (220 220))
+  )
+  net(3 name(OUT)
+   rect(diff_cont (-910 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(metal1 (1310 -3710) (360 2220))
+   rect(metal1 (-1900 -800) (2220 360))
+   rect(metal1 (-2280 -2400) (360 2840))
+   rect(metal1 (-360 -3600) (360 1560))
+   rect(metal1 (1240 2040) (360 1560))
+   rect(metal1 (-360 -5160) (360 1560))
+   rect(metal1 (-1960 2040) (360 1560))
+   rect(metal1_lbl (1419 -2181) (2 2))
+   rect(psd (-276 524) (525 1750))
+   rect(psd (-2100 -1750) (525 1750))
+   rect(nsd (1050 -5350) (525 1750))
+   rect(nsd (-2100 -1750) (525 1750))
+  )
+  net(4 name(VSS)
+   rect(diff_cont (-110 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(metal1 (-290 -290) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(via1 (-305 -705) (250 250))
+   rect(via1 (-250 150) (250 250))
+   rect(via1 (-250 -1450) (250 250))
+   rect(via1 (-250 150) (250 250))
+   rect(metal2 (-1525 -775) (2800 1700))
+   rect(metal2_lbl (-161 -541) (2 2))
+   rect(nsd (-1516 -1186) (550 1750))
+  )
+  net(5 name(VDD)
+   rect(diff_cont (-110 2490) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(metal1 (-290 -1490) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(via1 (-305 -1505) (250 250))
+   rect(via1 (-250 150) (250 250))
+   rect(via1 (-250 150) (250 250))
+   rect(via1 (-250 150) (250 250))
+   rect(metal2 (-1525 -1575) (2800 1700))
+   rect(metal2_lbl (-151 -1251) (2 2))
+   rect(psd (-1526 -476) (550 1750))
+  )
+  net(6 name(BULK)
+   rect(diff_cont (-110 -2160) (220 220))
+   rect(ptie (-510 -450) (800 680))
+  )
+
+  # Outgoing pins and their connections to nets
+  pin(1)
+  pin(2 name(IN))
+  pin(3 name(OUT))
+  pin(4 name(VSS))
+  pin(5 name(VDD))
+  pin(6 name(BULK))
+
+  # Devices and their connections
+  device(1 D$PMOS
+   device(D$PMOS$1 location(800 0))
+   connect(0 S S)
+   connect(1 S D)
+   connect(0 G G)
+   connect(1 G G)
+   connect(0 D D)
+   connect(1 D S)
+   connect(0 B B)
+   connect(1 B B)
+   location(-400 3200)
+   param(L 0.25)
+   param(W 3.5)
+   param(AS 1.4)
+   param(AD 1.4)
+   param(PS 6.85)
+   param(PD 6.85)
+   terminal(S 3)
+   terminal(G 2)
+   terminal(D 5)
+   terminal(B 1)
+  )
+  device(2 D$NMOS
+   device(D$NMOS$1 location(800 0))
+   connect(0 S S)
+   connect(1 S D)
+   connect(0 G G)
+   connect(1 G G)
+   connect(0 D D)
+   connect(1 D S)
+   connect(0 B B)
+   connect(1 B B)
+   location(-400 -400)
+   param(L 0.25)
+   param(W 3.5)
+   param(AS 1.4)
+   param(AD 1.4)
+   param(PS 6.85)
+   param(PD 6.85)
+   terminal(S 3)
+   terminal(G 2)
+   terminal(D 4)
+   terminal(B 6)
+  )
+
+ )
+ circuit(INV2PAIR
+
+  # Circuit boundary
+  rect((0 -1640) (5740 7820))
+
+  # Nets with their geometries
+  net(1 name(BULK))
+  net(2
+   rect(diff_cont (4230 3290) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-2860 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(metal1 (2350 -1490) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+  )
+  net(3
+   rect(diff_cont (4230 890) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-2860 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(metal1 (2350 -290) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+  )
+  net(4
+   rect(diff_cont (790 890) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+  )
+  net(5)
+  net(6
+   rect(diff_cont (3430 890) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+  )
+  net(7)
+
+  # Outgoing pins and their connections to nets
+  pin(1 name(BULK))
+  pin(2)
+  pin(3)
+  pin(4)
+  pin(5)
+  pin(6)
+  pin(7)
+
+  # Subcircuits and their connections
+  circuit(1 INV2 location(1700 800)
+   pin(0 7)
+   pin(1 5)
+   pin(2 4)
+   pin(3 3)
+   pin(4 2)
+   pin(5 1)
+  )
+  circuit(2 INV2 location(4340 800)
+   pin(0 7)
+   pin(1 4)
+   pin(2 6)
+   pin(3 3)
+   pin(4 2)
+   pin(5 1)
+  )
+
+ )
+ circuit(RINGO
+
+  # Circuit boundary
+  rect((-1720 -2440) (26880 7820))
+
+  # Nets with their geometries
+  net(1 name(FB)
+   rect(diff_cont (20210 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(metal1 (-22130 -2290) (360 360))
+   rect(via1 (-305 -305) (250 250))
+   rect(via1 (23190 -250) (250 250))
+   rect(metal2 (-23765 -325) (23840 400))
+   rect(metal2_lbl (-22121 -201) (2 2))
+  )
+  net(2 name(OSC)
+   rect(diff_cont (22850 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(via1 (1365 -2235) (250 250))
+   rect(metal2 (-325 -325) (400 400))
+   rect(metal2_lbl (-201 -201) (2 2))
+  )
+  net(3 name(VDD)
+   rect(diff_cont (7810 2490) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-2860 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-2860 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-2860 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (12980 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-2860 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (7700 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-2860 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (7700 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-2860 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -1420) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(metal1 (-21410 -10) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (-16200 -2600) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (12840 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (7560 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (7560 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal2_lbl (-21301 -1181) (2 2))
+  )
+  net(4 name(VSS)
+   rect(diff_cont (7810 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-2860 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-2860 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-2860 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (12980 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-2860 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (7700 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-2860 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (7700 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-2860 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 980) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(metal1 (-21410 -1330) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (2280 -1120) (360 1120))
+   rect(metal1 (-16200 -80) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (12840 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (7560 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (7560 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal1 (-3000 -1560) (360 1560))
+   rect(metal1 (-360 -1560) (360 1560))
+   rect(metal2_lbl (-21301 -381) (2 2))
+  )
+  net(5
+   rect(diff_cont (1730 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+  )
+  net(6
+   rect(diff_cont (17570 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+  )
+  net(7
+   rect(diff_cont (12290 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+  )
+  net(8
+   rect(diff_cont (7010 90) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (1380 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 -3820) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-220 -620) (220 220))
+   rect(diff_cont (-1820 3380) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+   rect(diff_cont (-220 180) (220 220))
+  )
+
+  # Outgoing pins and their connections to nets
+  pin(1 name(FB))
+  pin(2 name(OSC))
+  pin(3 name(VDD))
+  pin(4 name(VSS))
+
+  # Subcircuits and their connections
+  circuit(1 INV2PAIR location(19420 -800)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(3 1)
+   pin(4 6)
+   pin(5 2)
+   pin(6 3)
+  )
+  circuit(2 INV2PAIR location(-1700 -800)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(4 1)
+   pin(5 5)
+   pin(6 3)
+  )
+  circuit(3 INV2PAIR location(3580 -800)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(4 5)
+   pin(5 8)
+   pin(6 3)
+  )
+  circuit(4 INV2PAIR location(8860 -800)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(4 8)
+   pin(5 7)
+   pin(6 3)
+  )
+  circuit(5 INV2PAIR location(14140 -800)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(4 7)
+   pin(5 6)
+   pin(6 3)
+  )
+
+ )
+)
+
+# Reference netlist
+reference(
+
+ # Device class section
+ class(PMOS MOS4)
+ class(NMOS MOS4)
+
+ # Circuit section
+ # Circuits are the hierarchical building blocks of the netlist.
+ circuit(INV2
+
+  # Nets
+  net(1 name('1'))
+  net(2 name('2'))
+  net(3 name('3'))
+  net(4 name('4'))
+  net(5 name('5'))
+  net(6 name('6'))
+
+  # Outgoing pins and their connections to nets
+  pin(1 name('1'))
+  pin(2 name('2'))
+  pin(3 name('3'))
+  pin(4 name('4'))
+  pin(5 name('5'))
+  pin(6 name('6'))
+
+  # Devices and their connections
+  device(1 PMOS
+   name($1)
+   param(L 0.25)
+   param(W 3.5)
+   param(AS 1.4)
+   param(AD 1.4)
+   param(PS 6.85)
+   param(PD 6.85)
+   terminal(S 3)
+   terminal(G 2)
+   terminal(D 5)
+   terminal(B 1)
+  )
+  device(2 NMOS
+   name($3)
+   param(L 0.25)
+   param(W 3.5)
+   param(AS 1.4)
+   param(AD 1.4)
+   param(PS 6.85)
+   param(PD 6.85)
+   terminal(S 3)
+   terminal(G 2)
+   terminal(D 4)
+   terminal(B 6)
+  )
+
+ )
+ circuit(INV2PAIR
+
+  # Nets
+  net(1 name('1'))
+  net(2 name('2'))
+  net(3 name('3'))
+  net(4 name('4'))
+  net(5 name('5'))
+  net(6 name('6'))
+  net(7 name('7'))
+
+  # Outgoing pins and their connections to nets
+  pin(1 name('1'))
+  pin(2 name('2'))
+  pin(3 name('3'))
+  pin(4 name('4'))
+  pin(5 name('5'))
+  pin(6 name('6'))
+  pin(7 name('7'))
+
+  # Subcircuits and their connections
+  circuit(1 INV2 name($1)
+   pin(0 7)
+   pin(1 5)
+   pin(2 4)
+   pin(3 3)
+   pin(4 2)
+   pin(5 1)
+  )
+  circuit(2 INV2 name($2)
+   pin(0 7)
+   pin(1 4)
+   pin(2 6)
+   pin(3 3)
+   pin(4 2)
+   pin(5 1)
+  )
+
+ )
+ circuit(RINGO
+
+  # Nets
+  net(1 name('1'))
+  net(2 name('2'))
+  net(3 name('3'))
+  net(4 name('4'))
+  net(5 name('6'))
+  net(6 name('5'))
+  net(7 name('8'))
+  net(8 name('7'))
+
+  # Outgoing pins and their connections to nets
+  pin(1 name('1'))
+  pin(2 name('2'))
+  pin(3 name('3'))
+  pin(4 name('4'))
+
+  # Subcircuits and their connections
+  circuit(1 INV2PAIR name($1)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(3 1)
+   pin(4 5)
+   pin(5 2)
+   pin(6 3)
+  )
+  circuit(2 INV2PAIR name($2)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(4 1)
+   pin(5 6)
+   pin(6 3)
+  )
+  circuit(3 INV2PAIR name($3)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(4 6)
+   pin(5 7)
+   pin(6 3)
+  )
+  circuit(4 INV2PAIR name($4)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(4 7)
+   pin(5 8)
+   pin(6 3)
+  )
+  circuit(5 INV2PAIR name($5)
+   pin(0 4)
+   pin(1 3)
+   pin(2 4)
+   pin(4 8)
+   pin(5 5)
+   pin(6 3)
+  )
+
+ )
+)
+
+# Cross reference
+xref(
+ circuit(INV2 INV2 match
+  xref(
+   net(1 1 match)
+   net(6 6 match)
+   net(2 2 match)
+   net(3 3 match)
+   net(5 5 match)
+   net(4 4 match)
+   pin(0 0 match)
+   pin(5 5 match)
+   pin(1 1 match)
+   pin(2 2 match)
+   pin(4 4 match)
+   pin(3 3 match)
+   device(1 1 match)
+   device(2 2 match)
+  )
+ )
+ circuit(INV2PAIR INV2PAIR match
+  xref(
+   net(2 2 match)
+   net(3 3 match)
+   net(4 4 match)
+   net(5 5 match)
+   net(6 6 match)
+   net(7 7 match)
+   net(1 1 match)
+   pin(1 1 match)
+   pin(2 2 match)
+   pin(3 3 match)
+   pin(4 4 match)
+   pin(5 5 match)
+   pin(6 6 match)
+   pin(0 0 match)
+   circuit(1 1 match)
+   circuit(2 2 match)
+  )
+ )
+ circuit(RINGO RINGO match
+  xref(
+   net(5 6 match)
+   net(6 5 match)
+   net(7 8 match)
+   net(8 7 match)
+   net(1 1 match)
+   net(2 2 match)
+   net(3 3 match)
+   net(4 4 match)
+   pin(0 0 match)
+   pin(1 1 match)
+   pin(2 2 match)
+   pin(3 3 match)
+   circuit(1 1 match)
+   circuit(2 2 match)
+   circuit(3 3 match)
+   circuit(4 4 match)
+   circuit(5 5 match)
+  )
+ )
+)
diff --git a/testdata/sessions/test.lyrdb b/testdata/sessions/test.lyrdb
new file mode 100644
index 000000000..7fa6932ce
--- /dev/null
+++ b/testdata/sessions/test.lyrdb
@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<report-database>
+ <description>desc</description>
+ <original-file>of</original-file>
+ <generator>gg</generator>
+ <top-cell>top</top-cell>
+ <tags>
+  <tag>
+   <name>x</name>
+   <description>xdesc</description>
+  </tag>
+  <tag>
+   <name>x2</name>
+   <description/>
+  </tag>
+  <tag>
+   <name>x1</name>
+   <description/>
+  </tag>
+ </tags>
+ <categories>
+  <category>
+   <name>cat</name>
+   <description/>
+   <categories>
+    <category>
+     <name>subcat</name>
+     <description/>
+     <categories>
+     </categories>
+    </category>
+   </categories>
+  </category>
+ </categories>
+ <cells>
+  <cell>
+   <name>cell_name</name>
+   <variant/>
+   <references>
+   </references>
+  </cell>
+ </cells>
+ <items>
+  <item>
+   <tags>#x2,x1</tags>
+   <category>cat</category>
+   <cell>cell_name</cell>
+   <visited>false</visited>
+   <multiplicity>1</multiplicity>
+   <image>iVBORw0KGgoAAAANSUhEUgAAACoAAAA0CAIAAABzfT3nAAAAA3NCSVQICAjb4U/gAAAACXBIWXMAAA0SAAANOgHo3ZneAAAA3UlEQVRYhe2WwQ3DIAxFoco8XaGZIaeO43FyYgZYgYXcQ6SWuDGgBhWq/qccIvGCEd9SbAwAAPSGaW2lFR2rfWDpXrPpSe2SP10fvnn/PZHZH9IwbKFVZZ/Z6wMtZcjW02Bn2FVpZYdWdkr2nvh23S2FyDNJuVITpwmRjTGbNr0v20U5byNtJuuJt/fO2f93+UlbEJl5UjVPr3Y71EQ/PoPPlU+lDJtWlCt3GwCMG33BuJGAcWMEMG6c1jBudCyf/nzV8nbZPRohclFLHdGbZ8eNSjN1fmf0AACA1jwA4hKxu4C6P7EAAAAASUVORK5CYII=</image>
+   <values>
+    <value>[#x2] text: a</value>
+    <value>[x1] text: b</value>
+   </values>
+  </item>
+ </items>
+</report-database>
diff --git a/testdata/sessions/test.png b/testdata/sessions/test.png
new file mode 100644
index 000000000..4451152f6
Binary files /dev/null and b/testdata/sessions/test.png differ
diff --git a/testdata/sessions/test_with_relative_paths.lys b/testdata/sessions/test_with_relative_paths.lys
new file mode 100644
index 000000000..bc9ffbe62
--- /dev/null
+++ b/testdata/sessions/test_with_relative_paths.lys
@@ -0,0 +1,393 @@
+<?xml version="1.0" encoding="utf-8"?>
+<session>
+ <window-width>960</window-width>
+ <window-height>480</window-height>
+ <window-state>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</window-state>
+ <window-geometry>AdnQywABAAAAAAAAAAAAAAAAA78AAAHfAAAAAAAAAAAAAAO/AAAB3wAAAAAAAA==</window-geometry>
+ <current-view>0</current-view>
+ <layout>
+  <name>test.gds</name>
+  <file-path>test.gds</file-path>
+  <save-options-valid>false</save-options-valid>
+  <save-options>
+   <gds2>
+    <write-timestamps>true</write-timestamps>
+    <write-cell-properties>false</write-cell-properties>
+    <write-file-properties>false</write-file-properties>
+    <no-zero-length-paths>false</no-zero-length-paths>
+    <multi-xy-records>false</multi-xy-records>
+    <max-vertex-count>8000</max-vertex-count>
+    <max-cellname-length>32000</max-cellname-length>
+    <libname>LIB</libname>
+   </gds2>
+   <oasis>
+    <compression-level>2</compression-level>
+    <write-cblocks>false</write-cblocks>
+    <strict-mode>false</strict-mode>
+    <write-std-properties>1</write-std-properties>
+    <subst-char>*</subst-char>
+    <permissive>false</permissive>
+   </oasis>
+   <cif>
+    <polygon-mode>0</polygon-mode>
+   </cif>
+   <cif>
+    <dummy-calls>false</dummy-calls>
+    <blank-separator>false</blank-separator>
+   </cif>
+  </save-options>
+  <load-options>
+   <gds2>
+    <box-mode>1</box-mode>
+    <allow-big-records>true</allow-big-records>
+    <allow-multi-xy-records>true</allow-multi-xy-records>
+   </gds2>
+   <common>
+    <create-other-layers>true</create-other-layers>
+    <layer-map>layer_map()</layer-map>
+    <enable-properties>true</enable-properties>
+    <enable-text-objects>true</enable-text-objects>
+   </common>
+   <lefdef>
+    <read-all-layers>true</read-all-layers>
+    <layer-map>layer_map()</layer-map>
+    <dbu>0.001</dbu>
+    <produce-net-names>true</produce-net-names>
+    <net-property-name>#1</net-property-name>
+    <produce-inst-names>true</produce-inst-names>
+    <inst-property-name>#1</inst-property-name>
+    <produce-cell-outlines>true</produce-cell-outlines>
+    <cell-outline-layer>OUTLINE</cell-outline-layer>
+    <produce-placement-blockages>true</produce-placement-blockages>
+    <placement-blockage-layer>PLACEMENT_BLK</placement-blockage-layer>
+    <produce-regions>true</produce-regions>
+    <region-layer>REGIONS</region-layer>
+    <produce-via-geometry>true</produce-via-geometry>
+    <via-geometry-suffix/>
+    <via-geometry-datatype>0</via-geometry-datatype>
+    <produce-pins>true</produce-pins>
+    <pins-suffix>.PIN</pins-suffix>
+    <pins-datatype>2</pins-datatype>
+    <produce-obstructions>true</produce-obstructions>
+    <obstructions-suffix>.OBS</obstructions-suffix>
+    <obstructions-datatype>3</obstructions-datatype>
+    <produce-blockages>true</produce-blockages>
+    <blockages-suffix>.BLK</blockages-suffix>
+    <blockages-datatype>4</blockages-datatype>
+    <produce-labels>true</produce-labels>
+    <labels-suffix>.LABEL</labels-suffix>
+    <labels-datatype>1</labels-datatype>
+    <produce-routing>true</produce-routing>
+    <routing-suffix/>
+    <routing-datatype>0</routing-datatype>
+   </lefdef>
+   <mebes>
+    <invert>false</invert>
+    <subresolution>true</subresolution>
+    <produce-boundary>true</produce-boundary>
+    <num-stripes-per-cell>64</num-stripes-per-cell>
+    <num-shapes-per-cell>0</num-shapes-per-cell>
+    <data-layer>1</data-layer>
+    <data-datatype>0</data-datatype>
+    <data-name>DATA</data-name>
+    <boundary-layer>0</boundary-layer>
+    <boundary-datatype>0</boundary-datatype>
+    <boundary-name>BORDER</boundary-name>
+    <layer-map>layer_map()</layer-map>
+    <create-other-layers>true</create-other-layers>
+   </mebes>
+   <dxf>
+    <dbu>0.001</dbu>
+    <unit>1</unit>
+    <text-scaling>100</text-scaling>
+    <circle-points>100</circle-points>
+    <circle-accuracy>0</circle-accuracy>
+    <contour-accuracy>0</contour-accuracy>
+    <polyline-mode>0</polyline-mode>
+    <render-texts-as-polygons>false</render-texts-as-polygons>
+    <keep-other-cells>false</keep-other-cells>
+    <keep-layer-names>false</keep-layer-names>
+    <create-other-layers>true</create-other-layers>
+    <layer-map>layer_map()</layer-map>
+   </dxf>
+   <cif>
+    <wire-mode>0</wire-mode>
+    <dbu>0.001</dbu>
+    <layer-map>layer_map()</layer-map>
+    <create-other-layers>true</create-other-layers>
+    <keep-layer-names>false</keep-layer-names>
+   </cif>
+  </load-options>
+ </layout>
+ <view>
+  <title/>
+  <active-cellview-index>0</active-cellview-index>
+  <display>
+   <x-left>-0.5418</x-left>
+   <x-right>26.5482</x-right>
+   <y-bottom>-9.4815</y-bottom>
+   <y-top>17.6085</y-top>
+   <min-hier>0</min-hier>
+   <max-hier>1</max-hier>
+   <cellpaths>
+    <cellpath>
+     <cellname>RINGO</cellname>
+    </cellpath>
+   </cellpaths>
+  </display>
+  <cellviews>
+   <cellview>
+    <layout-ref>test.gds</layout-ref>
+    <tech-name/>
+    <hidden-cells>
+    </hidden-cells>
+   </cellview>
+  </cellviews>
+  <bookmarks>
+  </bookmarks>
+  <rdb-files>
+   <rdb-file>test.lyrdb</rdb-file>
+  </rdb-files>
+  <l2ndb-files>
+   <l2ndb-file>test.l2n</l2ndb-file>
+   <l2ndb-file>test.lvsdb</l2ndb-file>
+  </l2ndb-files>
+  <current-layer-property-tab>0</current-layer-property-tab>
+  <layer-properties-tabs>
+   <layer-properties>
+    <properties>
+     <frame-color>#ff80a8</frame-color>
+     <fill-color>#ff80a8</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I9</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>1/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#c080ff</frame-color>
+     <fill-color>#c080ff</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I5</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>2/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#9580ff</frame-color>
+     <fill-color>#9580ff</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I9</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>3/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#8086ff</frame-color>
+     <fill-color>#8086ff</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I5</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>4/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#80a8ff</frame-color>
+     <fill-color>#80a8ff</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I9</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>5/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#ff00ff</frame-color>
+     <fill-color>#ff00ff</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I5</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>8/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#8000ff</frame-color>
+     <fill-color>#8000ff</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I9</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>9/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#0000ff</frame-color>
+     <fill-color>#0000ff</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I5</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>10/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#0080ff</frame-color>
+     <fill-color>#0080ff</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I9</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>11/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#800057</frame-color>
+     <fill-color>#800057</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I5</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>13/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#800080</frame-color>
+     <fill-color>#800080</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I9</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>14/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#ffae00</frame-color>
+     <fill-color>#ffae00</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I5</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>1000/0@1</source>
+    </properties>
+    <properties>
+     <frame-color>#ff8000</frame-color>
+     <fill-color>#ff8000</fill-color>
+     <frame-brightness>0</frame-brightness>
+     <fill-brightness>0</fill-brightness>
+     <dither-pattern>I9</dither-pattern>
+     <line-style/>
+     <valid>true</valid>
+     <visible>true</visible>
+     <transparent>false</transparent>
+     <width/>
+     <marked>false</marked>
+     <xfill>false</xfill>
+     <animation>0</animation>
+     <name/>
+     <source>1001/0@1</source>
+    </properties>
+    <name/>
+   </layer-properties>
+  </layer-properties-tabs>
+  <annotations>
+   <annotation>
+    <class>ant::Object</class>
+    <value>id=0,x1=0,y1=0,x2=0,y2=0,category='',fmt='Hello, world!',fmt_x=$X,fmt_y=$Y,position=auto,xalign=auto,yalign=auto,xlabel_xalign=auto,xlabel_yalign=auto,ylabel_xalign=auto,ylabel_yalign=auto,style=ruler,outline=diag,snap=true,angle_constraint=global</value>
+   </annotation>
+   <annotation>
+    <class>img::Object</class>
+    <value>color:matrix=(1,0,0) (0,1,0) (0,0,1);min_value=0;max_value=255;is_visible=true;z_position=0;brightness=0;contrast=0;gamma=1;red_gain=1;green_gain=1;blue_gain=1;color_mapping=[0,'#000000';1,'#ffffff';];file='../testdata/sessions/test.png'</value>
+   </annotation>
+  </annotations>
+ </view>
+</session>