diff --git a/build/.gitignore b/build/.gitignore
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/include/Algo/Export/export.h b/include/Algo/Export/export.h
index 1142600878f24825e8cb2776a34a73147bc73ced..0dab9fa781a48521e651d01c49c307cd50fb989f 100644
--- a/include/Algo/Export/export.h
+++ b/include/Algo/Export/export.h
@@ -103,7 +103,7 @@ bool exportPlyPTMgeneric(typename PFP::MAP& map, const char* filename, const typ
 * @return true
 */
 template <typename PFP>
-bool exportPLYPTM(typename PFP::MAP& map, const char* filename, const typename PFP::TVEC3& position, const typename PFP::TVEC3 frame[3], const typename PFP::TVEC3 colorPTM[6], const FunctorSelect& good) ;
+bool exportPLYPTM(typename PFP::MAP& map, const char* filename, const typename PFP::TVEC3& position, const typename PFP::TVEC3 frame[3], const typename PFP::TVEC3 colorPTM[6], const FunctorSelect& good = allDarts) ;
 
 } // namespace Export
 
diff --git a/include/Algo/Export/export.hpp b/include/Algo/Export/export.hpp
index 4223f59820e8407979768eb105521876f66b81f8..c40ff67bfa5c400c267ff3d69620dca15b74f85a 100644
--- a/include/Algo/Export/export.hpp
+++ b/include/Algo/Export/export.hpp
@@ -387,9 +387,14 @@ bool exportPlySLF(typename PFP::MAP& map, const char* filename, const typename P
 		coefs[i] = map.template getAttribute<VEC3>(VERTEX,name.str()) ;
 	}
 
+	std::string file(filename) ;
+	size_t pos = file.rfind(".") ; // position of "." in filename
+	std::cout << file << " ; " << pos << std::endl ;
+	std::string extension = file.substr(pos) ;
+
 	out << "ply" << std::endl ;
 	out << "format ascii 1.0" << std::endl ;
-	out << "comment ply SLF (K. Vanhoey generic format)" << std::endl ;
+	out << "comment ply SLF (K. Vanhoey generic format): SLF_" << ((extension == ".plyPTMext") ? "PTMext" : "SHreal") << std::endl ;
 	out << "element vertex " << vertices.size() << std::endl ;
 	out << "property float x" << std::endl ;
 	out << "property float y" << std::endl ;
diff --git a/include/Algo/Import/import2tablesSurface.hpp b/include/Algo/Import/import2tablesSurface.hpp
index 2ab448441af2f766439a25e1421f4cb6a32a44a6..d8e1e1a2b1c2e0f4f9af62f3b5b66f420ef00fd5 100644
--- a/include/Algo/Import/import2tablesSurface.hpp
+++ b/include/Algo/Import/import2tablesSurface.hpp
@@ -682,7 +682,7 @@ bool MeshTablesSurface<PFP>::importPlyPTMgeneric(const std::string& filename, st
 			binormal = true ;
 		else if (tag == std::string("nx") || tag == std::string("ny") || tag == std::string("nz"))
 			normal = true ;
-		else if (tag.substr(2,2) == std::string("_a"))
+		if (tag.substr(0,1) == std::string("C") && tag.substr(2,1) == std::string("_"))
 			++nbCoefsPerPol ;
 	} while (tag != std::string("face")) ;
 	unsigned int nbRemainders = nbProps ;		// # remaining properties
@@ -758,7 +758,7 @@ bool MeshTablesSurface<PFP>::importPlyPTMgeneric(const std::string& filename, st
 
 	// Read faces index
 	m_nbEdges.reserve(m_nbFaces) ;
-	m_emb.reserve(3*m_nbFaces) ;
+	m_emb.reserve(3 * m_nbFaces) ;
 	for (unsigned int i = 0 ; i < m_nbFaces ; ++i)
 	{
 		// read the indices of vertices for current face