diff --git a/pandatool/src/eggprogs/lwoToEgg.cxx b/pandatool/src/eggprogs/lwoToEgg.cxx
index ad1c0aed0c..4a9d411b8d 100644
--- a/pandatool/src/eggprogs/lwoToEgg.cxx
+++ b/pandatool/src/eggprogs/lwoToEgg.cxx
@@ -62,6 +62,12 @@ run() {
   }
 
   LwoHeader *header = DCAST(LwoHeader, chunk);
+  if (!header->is_valid()) {
+    nout << "File " << _input_filename
+	 << " is not recognized as a Lightwave Object file.  "
+	 << "Perhaps the version is too recent.\n";
+    exit(1);
+  }
 
   _data.set_coordinate_system(_coordinate_system);
 
diff --git a/pandatool/src/lwo/Sources.pp b/pandatool/src/lwo/Sources.pp
index 3aae66d3f0..b0e098618e 100644
--- a/pandatool/src/lwo/Sources.pp
+++ b/pandatool/src/lwo/Sources.pp
@@ -16,8 +16,8 @@
     lwoClip.cxx lwoClip.h \
     lwoDiscontinuousVertexMap.cxx lwoDiscontinuousVertexMap.h \
     lwoGroupChunk.cxx lwoGroupChunk.h \
-    lwoHeader.cxx \
-    lwoHeader.h lwoInputFile.cxx lwoInputFile.h \
+    lwoHeader.I lwoHeader.cxx lwoHeader.h \
+    lwoInputFile.I lwoInputFile.cxx lwoInputFile.h \
     lwoLayer.h lwoLayer.cxx \
     lwoPoints.h lwoPoints.cxx \
     lwoPolygons.h lwoPolygons.cxx \
@@ -53,8 +53,8 @@
     lwoClip.h \
     lwoDiscontinuousVertexMap.h \
     lwoGroupChunk.h \
-    lwoHeader.h \
-    lwoInputFile.h \
+    lwoHeader.I lwoHeader.h \
+    lwoInputFile.I lwoInputFile.h \
     lwoLayer.h \
     lwoPoints.h \
     lwoPolygons.h \
diff --git a/pandatool/src/lwo/iffId.cxx b/pandatool/src/lwo/iffId.cxx
index 45d6b2a3b0..2342fc3391 100644
--- a/pandatool/src/lwo/iffId.cxx
+++ b/pandatool/src/lwo/iffId.cxx
@@ -4,3 +4,32 @@
 ////////////////////////////////////////////////////////////////////
 
 #include "iffId.h"
+
+#include <ctype.h>
+
+////////////////////////////////////////////////////////////////////
+//     Function: IffId::output
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+void IffId::
+output(ostream &out) const {
+  // If all of the characters are printable, just output them.  
+  if (isprint(_id._c[0]) && isprint(_id._c[1]) &&
+      isprint(_id._c[2]) && isprint(_id._c[3])) {
+    out << _id._c[0] << _id._c[1] << _id._c[2] << _id._c[3];
+
+  } else if (isprint(_id._c[0]) && isprint(_id._c[1]) &&
+	     isprint(_id._c[2]) && _id._c[3] == '\0') {
+    // If the last character is 0, output a 3-letter ID.
+    out << _id._c[0] << _id._c[1] << _id._c[2];
+
+  } else {
+    // Otherwise, write out the hex.
+    out << "0x" << hex << setfill('0');
+    for (int i = 0; i < 4; i++) {
+      out << setw(2) << (int)(unsigned char)_id._c[i];
+    }
+    out << dec << setfill(' ');
+  }
+}
diff --git a/pandatool/src/lwo/iffId.h b/pandatool/src/lwo/iffId.h
index b578a63c95..207e97c9e4 100644
--- a/pandatool/src/lwo/iffId.h
+++ b/pandatool/src/lwo/iffId.h
@@ -29,6 +29,8 @@ public:
   INLINE bool operator < (const IffId &other) const;
 
   INLINE string get_name() const;
+
+  void output(ostream &out) const;
   
 private:
   union {
@@ -40,7 +42,8 @@ private:
 #include "iffId.I"
 
 INLINE ostream &operator << (ostream &out, const IffId &id) {
-  return out << id.get_name();
+  id.output(out);
+  return out;
 }
  
 #endif
diff --git a/pandatool/src/lwo/iffInputFile.cxx b/pandatool/src/lwo/iffInputFile.cxx
index a759eead9f..36c592e9fc 100644
--- a/pandatool/src/lwo/iffInputFile.cxx
+++ b/pandatool/src/lwo/iffInputFile.cxx
@@ -21,6 +21,7 @@ IffInputFile() {
   _input = (istream *)NULL;
   _owns_istream = false;
   _eof = true;
+  _unexpected_eof = false;
   _bytes_read = 0;
 }
 
@@ -70,6 +71,7 @@ set_input(istream *input, bool owns_istream) {
   _input = input;
   _owns_istream = owns_istream;
   _eof = false;
+  _unexpected_eof = false;
   _bytes_read = 0;
 }
 
@@ -241,7 +243,10 @@ get_chunk() {
 
     if (chunk->read_iff(this, end_point)) {
       if (is_eof()) {
-	nout << "Unexpected EOF on file.\n";
+	if (!_unexpected_eof) {
+	  nout << "Unexpected EOF on file reading " << *chunk << "\n";
+	  _unexpected_eof = true;
+	}
 	return (IffChunk *)NULL;
       }
 
@@ -292,7 +297,10 @@ get_subchunk(IffChunk *context) {
 
     if (chunk->read_iff(this, end_point)) {
       if (is_eof()) {
-	nout << "Unexpected EOF on file.\n";
+	if (!_unexpected_eof) {
+	  nout << "Unexpected EOF on file reading " << *chunk << "\n";
+	  _unexpected_eof = true;
+	}
 	return (IffChunk *)NULL;
       }
 
diff --git a/pandatool/src/lwo/iffInputFile.h b/pandatool/src/lwo/iffInputFile.h
index 20c2880c5f..0bf694d980 100644
--- a/pandatool/src/lwo/iffInputFile.h
+++ b/pandatool/src/lwo/iffInputFile.h
@@ -64,6 +64,7 @@ protected:
   Filename _filename;
   bool _owns_istream;
   bool _eof;
+  bool _unexpected_eof;
   size_t _bytes_read;
 
 public:
diff --git a/pandatool/src/lwo/lwoHeader.I b/pandatool/src/lwo/lwoHeader.I
new file mode 100644
index 0000000000..0f2e21591a
--- /dev/null
+++ b/pandatool/src/lwo/lwoHeader.I
@@ -0,0 +1,27 @@
+// Filename: lwoHeader.I
+// Created by:  drose (24Apr01)
+// 
+////////////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: LwoHeader::is_valid
+//       Access: Public
+//  Description: Returns true if the header represents a valid and
+//               recognized Lightwave header, false otherwise.
+////////////////////////////////////////////////////////////////////
+INLINE bool LwoHeader::
+is_valid() const {
+  return _valid;
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: LwoHeader::get_version
+//       Access: Public
+//  Description: Returns the version of the Lightwave file.
+////////////////////////////////////////////////////////////////////
+INLINE double LwoHeader::
+get_version() const {
+  return _version;
+}
+
diff --git a/pandatool/src/lwo/lwoHeader.cxx b/pandatool/src/lwo/lwoHeader.cxx
index 4acf169eff..493fb6131f 100644
--- a/pandatool/src/lwo/lwoHeader.cxx
+++ b/pandatool/src/lwo/lwoHeader.cxx
@@ -4,12 +4,23 @@
 ////////////////////////////////////////////////////////////////////
 
 #include "lwoHeader.h"
-#include "iffInputFile.h"
+#include "lwoInputFile.h"
 
 #include <indent.h>
 
 TypeHandle LwoHeader::_type_handle;
 
+////////////////////////////////////////////////////////////////////
+//     Function: LwoHeader::Constructor
+//       Access: Public
+//  Description: 
+////////////////////////////////////////////////////////////////////
+LwoHeader::
+LwoHeader() {
+  _valid = false;
+  _version = 0.0;
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: LwoHeader::read_iff
 //       Access: Public, Virtual
@@ -22,8 +33,24 @@ TypeHandle LwoHeader::_type_handle;
 ////////////////////////////////////////////////////////////////////
 bool LwoHeader::
 read_iff(IffInputFile *in, size_t stop_at) {
-  _lwid = in->get_id();
-  read_chunks_iff(in, stop_at);
+  LwoInputFile *lin = DCAST(LwoInputFile, in);
+
+  _lwid = lin->get_id();
+
+  if (_lwid == IffId("LWO2")) {
+    _valid = true;
+    _version = 6.0;
+  } else if (_lwid == IffId("LWOB")) {
+    _valid = true;
+    _version = 5.0;
+  }
+
+  if (_valid) {
+    lin->set_lwo_version(_version);
+  }
+
+  read_chunks_iff(lin, stop_at);
+
   return true;
 }
 
diff --git a/pandatool/src/lwo/lwoHeader.h b/pandatool/src/lwo/lwoHeader.h
index 14890753cd..0d825adac1 100644
--- a/pandatool/src/lwo/lwoHeader.h
+++ b/pandatool/src/lwo/lwoHeader.h
@@ -16,11 +16,20 @@
 ////////////////////////////////////////////////////////////////////
 class LwoHeader : public LwoGroupChunk {
 public:
+  LwoHeader();
+
   IffId _lwid;
+  
+  INLINE bool is_valid() const;
+  INLINE double get_version() const;
 
 public:
   virtual bool read_iff(IffInputFile *in, size_t stop_at);
   virtual void write(ostream &out, int indent_level = 0) const;
+
+private:
+  bool _valid;
+  double _version;
   
 public:
   virtual TypeHandle get_type() const {
@@ -40,6 +49,8 @@ private:
   static TypeHandle _type_handle;
 };
 
+#include "lwoHeader.I"
+
 #endif
 
   
diff --git a/pandatool/src/lwo/lwoInputFile.I b/pandatool/src/lwo/lwoInputFile.I
new file mode 100644
index 0000000000..3cefb8e136
--- /dev/null
+++ b/pandatool/src/lwo/lwoInputFile.I
@@ -0,0 +1,31 @@
+// Filename: lwoInputFile.I
+// Created by:  drose (24Apr01)
+// 
+////////////////////////////////////////////////////////////////////
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: LwoInputFile::get_lwo_version
+//       Access: Public
+//  Description: Returns the version of the Lightwave file being read.
+//               This is unknown until the header record has been
+//               read; then it will be set by the header.
+////////////////////////////////////////////////////////////////////
+INLINE double LwoInputFile::
+get_lwo_version() const {
+  return _lwo_version;
+}
+
+
+////////////////////////////////////////////////////////////////////
+//     Function: LwoInputFile::set_lwo_version
+//       Access: Public
+//  Description: Changes the version number reported for the Lightwave
+//               file.  Normally this is only called by LwoHeader as
+//               it is read.
+////////////////////////////////////////////////////////////////////
+INLINE void LwoInputFile::
+set_lwo_version(double lwo_version) {
+  _lwo_version = lwo_version;
+}
+
diff --git a/pandatool/src/lwo/lwoInputFile.cxx b/pandatool/src/lwo/lwoInputFile.cxx
index f905ad8df2..27d1b998cc 100644
--- a/pandatool/src/lwo/lwoInputFile.cxx
+++ b/pandatool/src/lwo/lwoInputFile.cxx
@@ -120,7 +120,8 @@ make_new_chunk(IffId id) {
   } else if (id == IffId("POLS")) {
     return new LwoPolygons;
 
-  } else if (id == IffId("TAGS")) {
+  } else if (id == IffId("TAGS") || 
+	     id == IffId("SRFS")) {
     return new LwoTags;
 
   } else if (id == IffId("PTAG")) {
diff --git a/pandatool/src/lwo/lwoInputFile.h b/pandatool/src/lwo/lwoInputFile.h
index bc20fe7ede..1c172fc5c2 100644
--- a/pandatool/src/lwo/lwoInputFile.h
+++ b/pandatool/src/lwo/lwoInputFile.h
@@ -22,6 +22,9 @@ public:
   LwoInputFile();
   ~LwoInputFile();
 
+  INLINE double get_lwo_version() const;
+  INLINE void set_lwo_version(double version);
+
   int get_vx();
   LVecBase3f get_vec3();
   Filename get_filename();
@@ -29,6 +32,9 @@ public:
 protected:
   virtual IffChunk *make_new_chunk(IffId id);
 
+private:
+  double _lwo_version;
+
 public:
   virtual TypeHandle get_type() const {
     return get_class_type();
@@ -47,6 +53,8 @@ private:
   static TypeHandle _type_handle;
 };
 
+#include "lwoInputFile.I"
+
 #endif
 
   
diff --git a/pandatool/src/lwo/lwoPolygons.cxx b/pandatool/src/lwo/lwoPolygons.cxx
index 653b47f1fc..60a0dcec1d 100644
--- a/pandatool/src/lwo/lwoPolygons.cxx
+++ b/pandatool/src/lwo/lwoPolygons.cxx
@@ -45,23 +45,68 @@ bool LwoPolygons::
 read_iff(IffInputFile *in, size_t stop_at) {
   LwoInputFile *lin = DCAST(LwoInputFile, in);
 
-  _polygon_type = lin->get_id();
+  if (lin->get_lwo_version() >= 6.0) {
+    // 6.x style syntax:
+    // POLS { type[ID4], ( numvert+flags[U2], vert[VX] # numvert )* }
 
-  while (lin->get_bytes_read() < stop_at && !lin->is_eof()) {
-    int nf = lin->get_be_int16();
-    int num_vertices = nf & PF_numverts_mask;
+    _polygon_type = lin->get_id();
 
-    PT(Polygon) poly = new Polygon;
-    poly->_flags = nf & ~PF_numverts_mask;
-
-    for (int i = 0; i < num_vertices; i++) {
-      poly->_vertices.push_back(lin->get_vx());
+    while (lin->get_bytes_read() < stop_at && !lin->is_eof()) {
+      int nf = lin->get_be_uint16();
+      int num_vertices = nf & PF_numverts_mask;
+	
+      PT(Polygon) poly = new Polygon;
+      poly->_flags = nf & ~PF_numverts_mask;
+      poly->_surface_index = -1;
+	
+      for (int i = 0; i < num_vertices; i++) {
+	int vindex = lin->get_vx();
+	poly->_vertices.push_back(vindex);
+      }
+	
+      _polygons.push_back(poly);
     }
 
-    _polygons.push_back(poly);
+  } else {
+    // 5.x style syntax:
+    // POLS { ( numvert[U2], vert[VX] # numvert, +/-(surf+1)[I2], numdetail[U2]? )* }
+    _polygon_type = IffId("FACE");
+
+    int num_decals = 0;
+    while (lin->get_bytes_read() < stop_at && !lin->is_eof()) {
+      int num_vertices = lin->get_be_uint16();
+	
+      PT(Polygon) poly = new Polygon;
+      poly->_flags = 0;
+	
+      for (int i = 0; i < num_vertices; i++) {
+	int vindex = lin->get_vx();
+	poly->_vertices.push_back(vindex);
+      }
+
+      int surface = lin->get_be_int16();
+
+      if (num_decals > 0) {
+	// This is a decal polygon of a previous polygon.
+	num_decals--;
+	poly->_flags |= PF_decal;
+
+      } else {
+	if (surface < 0) {
+	  num_decals = lin->get_be_int16();
+	  surface = -surface;
+	}
+      }
+
+      // The surface index is stored +1 to allow signedness to be
+      // examined.
+      poly->_surface_index = surface - 1;
+
+      _polygons.push_back(poly);
+    }
   }
 
-  return (lin->get_bytes_read() == stop_at);
+  return true;
 }
 
 ////////////////////////////////////////////////////////////////////
diff --git a/pandatool/src/lwo/lwoPolygons.h b/pandatool/src/lwo/lwoPolygons.h
index f4780c7ed5..04cf3a7f06 100644
--- a/pandatool/src/lwo/lwoPolygons.h
+++ b/pandatool/src/lwo/lwoPolygons.h
@@ -25,13 +25,24 @@ public:
   enum PolygonFlags {
     PF_continuity_1    = 0x0400,
     PF_continuity_2    = 0x0800,
-    PF_numverts_mask   = 0x03ff
+    PF_numverts_mask   = 0x03ff,
+
+    // This "flag" is stored artificially when reading 5.x LWOB files,
+    // and indicates that the polygon is a decal of a preceding
+    // polygon.
+    PF_decal           = 0x0001
   };
 
   class Polygon : public ReferenceCount {
   public:
     int _flags;
     vector_int _vertices;
+    
+    // This value is only filled in when reading 5.x LWOB files, and
+    // indicates the surface index of the polygon within a preceding
+    // SRFS (LwoTags) chunk.  For 6.x and later files, this will be
+    // set to -1.
+    int _surface_index;
   };
 
   int get_num_polygons() const;
diff --git a/pandatool/src/lwo/lwoTags.h b/pandatool/src/lwo/lwoTags.h
index a5d3ea23dc..616a82764d 100644
--- a/pandatool/src/lwo/lwoTags.h
+++ b/pandatool/src/lwo/lwoTags.h
@@ -17,6 +17,11 @@
 // 	 Class : LwoTags
 // Description : An array of tag strings that will be referenced by
 //               later chunks.
+//
+//               This also serves as an array of surface names to be
+//               referenced by a later LwoPolygons chunk, in 5.x LWOB
+//               files.  The chunk id can be used to differentiate the
+//               meaning (TAGS vs. SRFS).
 ////////////////////////////////////////////////////////////////////
 class LwoTags : public LwoChunk {
 public:
diff --git a/pandatool/src/lwoegg/cLwoPoints.cxx b/pandatool/src/lwoegg/cLwoPoints.cxx
index 6410d23810..16e0b472ec 100644
--- a/pandatool/src/lwoegg/cLwoPoints.cxx
+++ b/pandatool/src/lwoegg/cLwoPoints.cxx
@@ -7,8 +7,26 @@
 #include "lwoToEggConverter.h"
 #include "cLwoLayer.h"
 
+#include <lwoVertexMap.h>
 #include <string_utils.h>
 
+////////////////////////////////////////////////////////////////////
+//     Function: CLwoPoints::add_vmap
+//       Access: Public
+//  Description: Associated the indicated VertexMap with the points
+//               set.  This may define such niceties as UV coordinates
+//               or per-vertex color.
+////////////////////////////////////////////////////////////////////
+void CLwoPoints::
+add_vmap(const LwoVertexMap *lwo_vmap) {
+  VMapNames &names = _vmap[lwo_vmap->_map_type];
+  bool inserted = names.insert(VMapNames::value_type(lwo_vmap->_name, lwo_vmap)).second;
+  if (!inserted) {
+    nout << "Multiple vertex maps on the same points of type " 
+	 << lwo_vmap->_map_type << " named " << lwo_vmap->_name << "\n";
+  }
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: CLwoPoints::make_egg
 //       Access: Public
diff --git a/pandatool/src/lwoegg/cLwoPoints.h b/pandatool/src/lwoegg/cLwoPoints.h
index 8c55b62cbf..b163413fa3 100644
--- a/pandatool/src/lwoegg/cLwoPoints.h
+++ b/pandatool/src/lwoegg/cLwoPoints.h
@@ -12,7 +12,10 @@
 #include <eggVertexPool.h>
 #include <pointerTo.h>
 
+#include <map>
+
 class LwoToEggConverter;
+class LwoVertexMap;
 class CLwoLayer;
 
 ////////////////////////////////////////////////////////////////////
@@ -26,6 +29,8 @@ public:
   INLINE CLwoPoints(LwoToEggConverter *converter, const LwoPoints *points,
 		    CLwoLayer *layer);
 
+  void add_vmap(const LwoVertexMap *lwo_vmap);
+
   void make_egg();
   void connect_egg();
 
@@ -33,6 +38,12 @@ public:
   CPT(LwoPoints) _points;
   CLwoLayer *_layer;
   PT(EggVertexPool) _egg_vpool;
+
+  // A number of vertex maps may be associated, by type and then by
+  // name.
+  typedef map<string, const LwoVertexMap *> VMapNames;
+  typedef map<IffId, VMapNames> VmapTypes;
+  VmapTypes _vmap;
 };
 
 #include "cLwoPoints.I"
diff --git a/pandatool/src/lwoegg/cLwoPolygons.cxx b/pandatool/src/lwoegg/cLwoPolygons.cxx
index e85731526f..10c84be240 100644
--- a/pandatool/src/lwoegg/cLwoPolygons.cxx
+++ b/pandatool/src/lwoegg/cLwoPolygons.cxx
@@ -38,8 +38,9 @@ make_egg() {
     make_faces();
 
   } else {
-    nout << "Ignoring unknown geometry type " << _polygons->_polygon_type
-	 << "\n";
+    nout << "Unknown geometry type " << _polygons->_polygon_type
+	 << "; treating as FACE.\n";
+    make_faces();
   }
 }
 
@@ -50,6 +51,8 @@ make_egg() {
 ////////////////////////////////////////////////////////////////////
 void CLwoPolygons::
 connect_egg() {
+  nassertv(_points->_layer->_egg_group != (EggGroup *)NULL);
+  nassertv(_egg_group != (EggGroup *)NULL);
   _points->_layer->_egg_group->steal_children(*_egg_group);
 }
 
diff --git a/pandatool/src/lwoegg/lwoToEggConverter.cxx b/pandatool/src/lwoegg/lwoToEggConverter.cxx
index 6c09aa6c55..0c7a173d5c 100644
--- a/pandatool/src/lwoegg/lwoToEggConverter.cxx
+++ b/pandatool/src/lwoegg/lwoToEggConverter.cxx
@@ -12,6 +12,7 @@
 #include <lwoLayer.h>
 #include <lwoPoints.h>
 #include <lwoPolygons.h>
+#include <lwoVertexMap.h>
 
 
 ////////////////////////////////////////////////////////////////////
@@ -98,6 +99,7 @@ void LwoToEggConverter::
 collect_lwo() {  
   CLwoLayer *last_layer = (CLwoLayer *)NULL;
   CLwoPoints *last_points = (CLwoPoints *)NULL;
+  CLwoPolygons *last_polygons = (CLwoPolygons *)NULL;
 
   int num_chunks = _lwo_header->get_num_chunks();
   for (int i = 0; i < num_chunks; i++) {
@@ -115,6 +117,7 @@ collect_lwo() {
       _layers[number] = layer;
       last_layer = layer;
       last_points = (CLwoPoints *)NULL;
+      last_polygons = (CLwoPolygons *)NULL;
 
     } else if (chunk->is_of_type(LwoPoints::get_class_type())) {
       if (last_layer == (CLwoLayer *)NULL) {
@@ -126,6 +129,14 @@ collect_lwo() {
       _points.push_back(points);
       last_points = points;
 
+    } else if (chunk->is_of_type(LwoVertexMap::get_class_type())) {
+      if (last_points == (CLwoPoints *)NULL) {
+	nout << "Vertex map chunk encountered without a preceding points chunk.\n";
+      } else {
+	const LwoVertexMap *lwo_vmap = DCAST(LwoVertexMap, chunk);
+	last_points->add_vmap(lwo_vmap);
+      }
+
     } else if (chunk->is_of_type(LwoPolygons::get_class_type())) {
       if (last_points == (CLwoPoints *)NULL) {
 	nout << "Polygon chunk encountered without a preceding points chunk.\n";
@@ -133,6 +144,7 @@ collect_lwo() {
 	const LwoPolygons *lwo_polygons = DCAST(LwoPolygons, chunk);
 	CLwoPolygons *polygons = new CLwoPolygons(this, lwo_polygons, last_points);
 	_polygons.push_back(polygons);
+	last_polygons = polygons;
       }
     }
   }
@@ -146,6 +158,10 @@ collect_lwo() {
 ////////////////////////////////////////////////////////////////////
 void LwoToEggConverter::
 make_egg() {  
+  if (_generic_layer != (CLwoLayer *)NULL) {
+    _generic_layer->make_egg();
+  }
+
   Layers::iterator li;
   for (li = _layers.begin(); li != _layers.end(); ++li) {
     CLwoLayer *layer = (*li);
@@ -174,6 +190,10 @@ make_egg() {
 ////////////////////////////////////////////////////////////////////
 void LwoToEggConverter::
 connect_egg() {  
+  if (_generic_layer != (CLwoLayer *)NULL) {
+    _generic_layer->connect_egg();
+  }
+
   Layers::iterator li;
   for (li = _layers.begin(); li != _layers.end(); ++li) {
     CLwoLayer *layer = (*li);