diff --git a/color-schemes/editor/dark-background.json b/color-schemes/editor/dark-background.json
index 2c199fcc..3db0fb02 100644
--- a/color-schemes/editor/dark-background.json
+++ b/color-schemes/editor/dark-background.json
@@ -23,7 +23,7 @@
         "selection-foreground" : "#ffffff",
         "selection-background" : "#4a90d9",
         "margin-background" : "#272822",
-        "margin-foreground" : "#e0e0e0",
+        "margin-foreground" : "Gray",
         "matched-brace-background" : "#505050",
         "matched-brace-foreground" : "#ffffff",
         "unmatched-brace-background" : "#dc322f",
@@ -33,4 +33,4 @@
         "error-indicator-outline" : "#ff000000",
         "edge" : "#ffffff"
     }
-}
\ No newline at end of file
+}
diff --git a/color-schemes/editor/light-background.json b/color-schemes/editor/light-background.json
index 2c0ffb30..b7e02aee 100644
--- a/color-schemes/editor/light-background.json
+++ b/color-schemes/editor/light-background.json
@@ -23,7 +23,7 @@
         "selection-foreground" : "#ffffff",
         "selection-background" : "#4a90d9",
         "margin-background" : "#f8f8f8",
-        "margin-foreground" : "#000000",
+        "margin-foreground" : "Gray",
         "matched-brace-background" : "#c7f6cb",
         "matched-brace-foreground" : "Blue",
         "unmatched-brace-background" : "#ffcdcc",
@@ -33,4 +33,4 @@
         "error-indicator-outline" : "#ff000000",
         "edge" : "#ffffff"
     }
-}
\ No newline at end of file
+}
diff --git a/color-schemes/editor/monokai.json b/color-schemes/editor/monokai.json
index 8ddac03c..bfd8dc1a 100644
--- a/color-schemes/editor/monokai.json
+++ b/color-schemes/editor/monokai.json
@@ -23,7 +23,7 @@
         "selection-foreground" : "#272822",
         "selection-background" : "#f8f8f2",
         "margin-background" : "#3e3d32",
-        "margin-foreground" : "#f8f8f2",
+        "margin-foreground" : "DarkGray",
         "matched-brace-background" : "#606060",
         "matched-brace-foreground" : "#ffff00",
         "unmatched-brace-background" : "#b06060",
@@ -33,4 +33,4 @@
         "error-indicator-outline" : "#ff000000",
         "edge" : "#ffffff"
     }
-}
\ No newline at end of file
+}
diff --git a/openscad.pro b/openscad.pro
index a2eefe65..3f7f9793 100644
--- a/openscad.pro
+++ b/openscad.pro
@@ -498,7 +498,6 @@ SOURCES += src/cgalutils.cc \
            src/CGALCache.cc \
            src/CGALRenderer.cc \
            src/CGAL_Nef_polyhedron.cc \
-           src/CGAL_Nef_polyhedron_DxfData.cc \
            src/cgalworker.cc \
            src/Polygon2d-CGAL.cc
 }
diff --git a/src/CGAL_Nef_polyhedron.cc b/src/CGAL_Nef_polyhedron.cc
index d49521e0..a470e191 100644
--- a/src/CGAL_Nef_polyhedron.cc
+++ b/src/CGAL_Nef_polyhedron.cc
@@ -3,6 +3,7 @@
 #include "cgalutils.h"
 #include "printutils.h"
 #include "polyset.h"
+#include "svg.h"
 
 CGAL_Nef_polyhedron::CGAL_Nef_polyhedron(CGAL_Nef_polyhedron3 *p)
 {
@@ -135,3 +136,26 @@ void CGAL_Nef_polyhedron::resize(Vector3d newsize,
 
 	this->transform(Transform3d(t));
 }
+
+std::string CGAL_Nef_polyhedron::dump() const
+{
+	return OpenSCAD::dump_svg( *this->p3 );
+}
+
+
+void CGAL_Nef_polyhedron::transform( const Transform3d &matrix )
+{
+	if (!this->isEmpty()) {
+		if (matrix.matrix().determinant() == 0) {
+			PRINT("WARNING: Scaling a 3D object with 0 - removing object");
+			this->reset();
+		}
+		else {
+			CGAL_Aff_transformation t(
+				matrix(0,0), matrix(0,1), matrix(0,2), matrix(0,3),
+				matrix(1,0), matrix(1,1), matrix(1,2), matrix(1,3),
+				matrix(2,0), matrix(2,1), matrix(2,2), matrix(2,3), matrix(3,3));
+			this->p3->transform(t);
+		}
+	}
+}
diff --git a/src/CGAL_Nef_polyhedron_DxfData.cc b/src/CGAL_Nef_polyhedron_DxfData.cc
deleted file mode 100644
index cbb5ce77..00000000
--- a/src/CGAL_Nef_polyhedron_DxfData.cc
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- *  OpenSCAD (www.openscad.org)
- *  Copyright (C) 2009-2011 Clifford Wolf <clifford@clifford.at> and
- *                          Marius Kintel <marius@kintel.net>
- *
- *  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.
- *
- *  As a special exception, you have permission to link this program
- *  with the CGAL library and distribute executables, as long as you
- *  follow the requirements of the GNU GPL in regard to all of the
- *  software in the executable aside from CGAL.
- *
- *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- */
-
-#include "dxfdata.h"
-#include "Polygon2d.h"
-#include "grid.h"
-#include "CGAL_Nef_polyhedron.h"
-#include "cgal.h"
-#include "cgalutils.h"
-#include <boost/variant.hpp>
-#include "polyset.h"
-#include "Tree.h"
-
-#ifdef ENABLE_CGAL
-
-std::string CGAL_Nef_polyhedron::dump() const
-{
-	return OpenSCAD::dump_svg( *this->p3 );
-}
-
-
-void CGAL_Nef_polyhedron::transform( const Transform3d &matrix )
-{
-	if (!this->isEmpty()) {
-		if (matrix.matrix().determinant() == 0) {
-			PRINT("WARNING: Scaling a 3D object with 0 - removing object");
-			this->reset();
-		}
-		else {
-			CGAL_Aff_transformation t(
-				matrix(0,0), matrix(0,1), matrix(0,2), matrix(0,3),
-				matrix(1,0), matrix(1,1), matrix(1,2), matrix(1,3),
-				matrix(2,0), matrix(2,1), matrix(2,2), matrix(2,3), matrix(3,3));
-			this->p3->transform(t);
-		}
-	}
-}
-
-#endif // ENABLE_CGAL
diff --git a/src/cgalutils.cc b/src/cgalutils.cc
index ed93c1d8..15d880fa 100644
--- a/src/cgalutils.cc
+++ b/src/cgalutils.cc
@@ -117,6 +117,54 @@ static CGAL_Nef_polyhedron *createNefPolyhedronFromPolygon2d(const Polygon2d &po
 	return createNefPolyhedronFromPolySet(*ps);
 }
 
+/*
+
+ZRemover
+
+This class converts one or more Nef3 polyhedra into a Nef2 polyhedron by
+stripping off the 'z' coordinates from the vertices. The resulting Nef2
+poly is accumulated in the 'output_nefpoly2d' member variable.
+
+The 'z' coordinates will either be all 0s, for an xy-plane intersected Nef3,
+or, they will be a mixture of -eps and +eps, for a thin-box intersected Nef3.
+
+Notes on CGAL's Nef Polyhedron2:
+
+1. The 'mark' on a 2d Nef face is important when doing unions/intersections.
+ If the 'mark' of a face is wrong the resulting nef2 poly will be unexpected.
+2. The 'mark' can be dependent on the points fed to the Nef2 constructor.
+ This is why we iterate through the 3d faces using the halfedge cycle
+ source()->target() instead of the ordinary source()->source(). The
+ the latter can generate sequences of points that will fail the
+ the CGAL::is_simple_2() test, resulting in improperly marked nef2 polys.
+3. 3d facets have 'two sides'. we throw out the 'down' side to prevent dups.
+
+The class uses the 'visitor' pattern from the CGAL manual. See also
+http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Nef_3/Chapter_main.html
+http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Nef_3_ref/Class_Nef_polyhedron3.html
+OGL_helper.h
+*/
+
+class ZRemover {
+public:
+	CGAL_Nef_polyhedron2::Boundary boundary;
+	boost::shared_ptr<CGAL_Nef_polyhedron2> tmpnef2d;
+	boost::shared_ptr<CGAL_Nef_polyhedron2> output_nefpoly2d;
+	CGAL::Direction_3<CGAL_Kernel3> up;
+	ZRemover()
+	{
+		output_nefpoly2d.reset( new CGAL_Nef_polyhedron2() );
+		boundary = CGAL_Nef_polyhedron2::INCLUDED;
+		up = CGAL::Direction_3<CGAL_Kernel3>(0,0,1);
+	}
+	void visit( CGAL_Nef_polyhedron3::Vertex_const_handle ) {}
+	void visit( CGAL_Nef_polyhedron3::Halfedge_const_handle ) {}
+	void visit( CGAL_Nef_polyhedron3::SHalfedge_const_handle ) {}
+	void visit( CGAL_Nef_polyhedron3::SHalfloop_const_handle ) {}
+	void visit( CGAL_Nef_polyhedron3::SFace_const_handle ) {}
+	void visit( CGAL_Nef_polyhedron3::Halffacet_const_handle hfacet );
+};
+
 namespace CGALUtils {
 
 	bool applyHull(const Geometry::ChildList &children, PolySet &result)
diff --git a/src/cgalutils.h b/src/cgalutils.h
index 4939c9fb..9e09bcb6 100644
--- a/src/cgalutils.h
+++ b/src/cgalutils.h
@@ -40,54 +40,3 @@ namespace CGALUtils {
 																 std::vector<CGAL_Polygon_3> &triangles,
 																 CGAL::Plane_3<CGAL_Kernel3> &plane);
 };
-
-#include "svg.h"
-#include "printutils.h"
-
-/*
-
-ZRemover
-
-This class converts one or more Nef3 polyhedra into a Nef2 polyhedron by
-stripping off the 'z' coordinates from the vertices. The resulting Nef2
-poly is accumulated in the 'output_nefpoly2d' member variable.
-
-The 'z' coordinates will either be all 0s, for an xy-plane intersected Nef3,
-or, they will be a mixture of -eps and +eps, for a thin-box intersected Nef3.
-
-Notes on CGAL's Nef Polyhedron2:
-
-1. The 'mark' on a 2d Nef face is important when doing unions/intersections.
- If the 'mark' of a face is wrong the resulting nef2 poly will be unexpected.
-2. The 'mark' can be dependent on the points fed to the Nef2 constructor.
- This is why we iterate through the 3d faces using the halfedge cycle
- source()->target() instead of the ordinary source()->source(). The
- the latter can generate sequences of points that will fail the
- the CGAL::is_simple_2() test, resulting in improperly marked nef2 polys.
-3. 3d facets have 'two sides'. we throw out the 'down' side to prevent dups.
-
-The class uses the 'visitor' pattern from the CGAL manual. See also
-http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Nef_3/Chapter_main.html
-http://www.cgal.org/Manual/latest/doc_html/cgal_manual/Nef_3_ref/Class_Nef_polyhedron3.html
-OGL_helper.h
-*/
-
-class ZRemover {
-public:
-	CGAL_Nef_polyhedron2::Boundary boundary;
-	boost::shared_ptr<CGAL_Nef_polyhedron2> tmpnef2d;
-	boost::shared_ptr<CGAL_Nef_polyhedron2> output_nefpoly2d;
-	CGAL::Direction_3<CGAL_Kernel3> up;
-	ZRemover()
-	{
-		output_nefpoly2d.reset( new CGAL_Nef_polyhedron2() );
-		boundary = CGAL_Nef_polyhedron2::INCLUDED;
-		up = CGAL::Direction_3<CGAL_Kernel3>(0,0,1);
-	}
-	void visit( CGAL_Nef_polyhedron3::Vertex_const_handle ) {}
-	void visit( CGAL_Nef_polyhedron3::Halfedge_const_handle ) {}
-	void visit( CGAL_Nef_polyhedron3::SHalfedge_const_handle ) {}
-	void visit( CGAL_Nef_polyhedron3::SHalfloop_const_handle ) {}
-	void visit( CGAL_Nef_polyhedron3::SFace_const_handle ) {}
-	void visit( CGAL_Nef_polyhedron3::Halffacet_const_handle hfacet );
-};
diff --git a/src/scintillaeditor.cpp b/src/scintillaeditor.cpp
index 3286c99f..ed110952 100644
--- a/src/scintillaeditor.cpp
+++ b/src/scintillaeditor.cpp
@@ -344,17 +344,15 @@ void ScintillaEditor::noColor()
 	qsci->setIndicatorOutlineColor(QColor(0, 0, 0, 255), indicatorNumber); // only alpha part is used
 	qsci->setCaretLineBackgroundColor(Qt::white);
 	qsci->setWhitespaceForegroundColor(Qt::black);
-	qsci->setMarginsBackgroundColor(Qt::white);
-	qsci->setMarginsForegroundColor(Qt::black);
-	qsci->setSelectionForegroundColor(Qt::white);
-	qsci->setSelectionBackgroundColor(Qt::black);
-	qsci->setMatchedBraceBackgroundColor(Qt::white);
+	qsci->setSelectionForegroundColor(Qt::black);
+	qsci->setSelectionBackgroundColor(QColor("LightSkyBlue"));
+	qsci->setMatchedBraceBackgroundColor(QColor("LightBlue"));
 	qsci->setMatchedBraceForegroundColor(Qt::black);
-	qsci->setUnmatchedBraceBackgroundColor(Qt::white);
+	qsci->setUnmatchedBraceBackgroundColor(QColor("pink"));
 	qsci->setUnmatchedBraceForegroundColor(Qt::black);
-	qsci->setMarginsBackgroundColor(Qt::lightGray);
-	qsci->setMarginsForegroundColor(Qt::black);
-	qsci->setFoldMarginColors(Qt::lightGray, Qt::lightGray);
+	qsci->setMarginsBackgroundColor(QColor("whiteSmoke"));
+	qsci->setMarginsForegroundColor(QColor("gray"));
+	qsci->setFoldMarginColors(QColor("whiteSmoke"), QColor("whiteSmoke"));
 	qsci->setEdgeColor(Qt::black);
 }
 
@@ -471,10 +469,10 @@ void ScintillaEditor::zoomOut()
 
 void ScintillaEditor::initFont(const QString& fontName, uint size)
 {
-  QFont font(fontName, size);
-  font.setFixedPitch(true);
-  lexer->setFont(font);
-  qsci->setMarginsFont(font);
+  this->currentFont = QFont(fontName, size);
+  this->currentFont.setFixedPitch(true);
+  lexer->setFont(this->currentFont);
+  qsci->setMarginsFont(this->currentFont);
   onTextChanged(); // Update margin width
 }
 
@@ -486,8 +484,8 @@ void ScintillaEditor::initMargin()
 
 void ScintillaEditor::onTextChanged()
 {
-	QFontMetrics fontmetrics = qsci->fontMetrics();
-	qsci->setMarginWidth(1, fontmetrics.width(QString::number(qsci->lines())) + 6);
+  QFontMetrics fontmetrics(this->currentFont);
+  qsci->setMarginWidth(1, QString(trunc(log10(qsci->lines())+2), '0'));
 }
 
 bool ScintillaEditor::find(const QString &expr, bool findNext, bool findBackwards)
diff --git a/src/scintillaeditor.h b/src/scintillaeditor.h
index 6d83da6e..c00e7542 100644
--- a/src/scintillaeditor.h
+++ b/src/scintillaeditor.h
@@ -94,4 +94,5 @@ private:
 	static const int indicatorNumber = 8; // first 8 are used by lexers
 	static const int markerNumber = 2;
 	ScadLexer *lexer;
+	QFont currentFont;
 };
diff --git a/src/transform.cc b/src/transform.cc
index c86f0301..2f7a2a89 100644
--- a/src/transform.cc
+++ b/src/transform.cc
@@ -168,12 +168,16 @@ AbstractNode *TransformModule::instantiate(const Context *ctx, const ModuleInsta
 	{
 		ValuePtr v = c.lookup_variable("m");
 		if (v->type() == Value::VECTOR) {
+			Matrix4d rawmatrix = Matrix4d::Identity();
 			for (int i = 0; i < 16; i++) {
 				size_t x = i / 4, y = i % 4;
 				if (y < v->toVector().size() && v->toVector()[y].type() == 
 						Value::VECTOR && x < v->toVector()[y].toVector().size())
-					v->toVector()[y].toVector()[x].getDouble(node->matrix(y, x));
+					v->toVector()[y].toVector()[x].getDouble(rawmatrix(y, x));
 			}
+			double w = rawmatrix(3,3);
+			if (w != 1.0) node->matrix = rawmatrix / w;
+			else node->matrix = rawmatrix;
 		}
 	}
 
diff --git a/testdata/scad/3D/features/transform-tests.scad b/testdata/scad/3D/features/transform-tests.scad
index 0c922c78..95a1c589 100644
--- a/testdata/scad/3D/features/transform-tests.scad
+++ b/testdata/scad/3D/features/transform-tests.scad
@@ -15,3 +15,8 @@ multmatrix([[1,0.4,0.1,-25],
             [0.4,0.8,0,-25],
             [0.2,0.2,0.5,0],
             [0,0,0,1]]) mycyl();
+translate([-25,-40,0])
+  multmatrix([[1,0,0,0],
+              [0,1,0,0],
+              [0,0,1,0],
+              [0,0,0,2]]) mycyl();
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index 2448473f..2c4aa776 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -694,7 +694,6 @@ set(CGAL_SOURCES
   ../src/cgalutils-tess.cc 
   ../src/cgalutils-polyhedron.cc 
   ../src/CGALCache.cc
-  ../src/CGAL_Nef_polyhedron_DxfData.cc
   ../src/Polygon2d-CGAL.cc
   ../src/svg.cc
   ../src/GeometryEvaluator.cc)
diff --git a/tests/regression/cgalpngtest/transform-tests-expected.png b/tests/regression/cgalpngtest/transform-tests-expected.png
index ee8b6e5b..145eebae 100644
Binary files a/tests/regression/cgalpngtest/transform-tests-expected.png and b/tests/regression/cgalpngtest/transform-tests-expected.png differ
diff --git a/tests/regression/dumptest/transform-tests-expected.csg b/tests/regression/dumptest/transform-tests-expected.csg
index 8b3d86a4..399fe735 100644
--- a/tests/regression/dumptest/transform-tests-expected.csg
+++ b/tests/regression/dumptest/transform-tests-expected.csg
@@ -42,4 +42,11 @@ group() {
 			cylinder($fn = 0, $fa = 12, $fs = 2, h = 20, r1 = 10, r2 = 0, center = false);
 		}
 	}
+	multmatrix([[1, 0, 0, -25], [0, 1, 0, -40], [0, 0, 1, 0], [0, 0, 0, 1]]) {
+		multmatrix([[0.5, 0, 0, 0], [0, 0.5, 0, 0], [0, 0, 0.5, 0], [0, 0, 0, 1]]) {
+			group() {
+				cylinder($fn = 0, $fa = 12, $fs = 2, h = 20, r1 = 10, r2 = 0, center = false);
+			}
+		}
+	}
 }
diff --git a/tests/regression/opencsgtest/transform-tests-expected.png b/tests/regression/opencsgtest/transform-tests-expected.png
index 52f43304..55d7a44d 100644
Binary files a/tests/regression/opencsgtest/transform-tests-expected.png and b/tests/regression/opencsgtest/transform-tests-expected.png differ
diff --git a/tests/regression/throwntogethertest/transform-tests-expected.png b/tests/regression/throwntogethertest/transform-tests-expected.png
index 52f43304..55d7a44d 100644
Binary files a/tests/regression/throwntogethertest/transform-tests-expected.png and b/tests/regression/throwntogethertest/transform-tests-expected.png differ