diff --git a/AMDiS/src/MacroReader.cc b/AMDiS/src/MacroReader.cc
index 6ac3230ebee2c26a62d6ac4598e013930db5df5e..1a4cb610ab4bbedf99191f3951074b2db00dc391 100644
--- a/AMDiS/src/MacroReader.cc
+++ b/AMDiS/src/MacroReader.cc
@@ -40,7 +40,7 @@ namespace AMDiS {
 
     // === read periodic data =================================
     if (periodicFile && (strcmp(periodicFile, "") != 0)) {
-      WARNING("periodic boundaries may lead to errors in small meshes if element neighbours not set\n");
+      WARNING("Periodic boundaries may lead to errors in small meshes if element neighbours are not set!\n");
     
       FILE *file = fopen(periodicFile, "r");
       TEST_EXIT(file)("can't open file %s\n", periodicFile);
@@ -54,13 +54,11 @@ namespace AMDiS {
       int mode = -1; // 0: drop dofs, 1: associate dofs
       int result;
       BoundaryType boundaryType;
+      PeriodicMap periodicMap;
 
       fscanf(file, "%*s %d", &n);
-
       fscanf(file, "%*s %*s %*s %*s %*s %*s %*s %*s %*s %*s %*s");
-
-      PeriodicMap periodicMap;
-    
+   
       for (int i = 0; i < n; i++) {
 	std::map<int, int> vertexMapEl1;
 	std::map<int, int> vertexMapEl2;
@@ -107,22 +105,23 @@ namespace AMDiS {
 	    sideEl2 -= verticesEl2[j];
 	  }
 	}
-	
+
 	// create periodic info
 	DimVec<WorldVector<double> > periodicCoordsEl1(dim - 1, NO_INIT);
 	DimVec<WorldVector<double> > periodicCoordsEl2(dim - 1, NO_INIT);
 
 	Element *element1 = const_cast<Element*>((*(mel + el1))->getElement());
 	Element *element2 = const_cast<Element*>((*(mel + el2))->getElement());
-      
+     
 	// for all vertices of this side
 	for (int j = 0; j < dim; j++) {
 	  periodicCoordsEl1[element1->getPositionOfVertex(sideEl1, verticesEl1[j])] = 
 	    coords[melVertex[el2][vertexMapEl1[verticesEl1[j]]]];
+
 	  periodicCoordsEl2[element2->getPositionOfVertex(sideEl2, verticesEl2[j])] =
 	    coords[melVertex[el1][vertexMapEl2[verticesEl2[j]]]];
 	}
-      
+	     
 	// decorate leaf data
 	ElementData *ld1 = element1->getElementData();
 	ElementData *ld2 = element2->getElementData();
@@ -848,11 +847,8 @@ namespace AMDiS {
   void MacroInfo::fillBoundaryInfo(Mesh *mesh)
   {
     int i, j, k, nv = mesh->getNumberOfVertices();
-
     std::deque<MacroElement*>::iterator melIt;
-
     BoundaryType *bound = new BoundaryType[nv];
-
     int dim = mesh->getDim();
 
     switch(dim) {
diff --git a/AMDiS/src/Triangle.h b/AMDiS/src/Triangle.h
index 4fa0c0912cd13d18f3bde0f84940731a1758e924..8b6a369abf9fd479991f84b1084fb7085e1e3aaa 100644
--- a/AMDiS/src/Triangle.h
+++ b/AMDiS/src/Triangle.h
@@ -126,6 +126,7 @@ namespace AMDiS {
       FUNCNAME("Triangle::getSideOfChild()");
       TEST_EXIT_DBG(child==0 || child==1)("child must be in (0,1)\n");
       TEST_EXIT_DBG(side >= 0 && side <= 2)("side must be between 0 and 2\n");
+
       return sideOfChild[child][side];
     }
 
@@ -135,19 +136,26 @@ namespace AMDiS {
       FUNCNAME("Triangle::getVertexOfParent()");
       TEST_EXIT_DBG(child==0 || child==1)("child must be in (0,1)\n");
       TEST_EXIT_DBG(side >= 0 && side <= 2)("side must be between 0 and 2\n");
+
       return vertexOfParent[child][side];
     }
 
     virtual int getPositionOfVertex(int side, int vertex) const 
     {
+      FUNCNAME("Triangle::getPositionOfVertex()");
+      TEST_EXIT_DBG(side >= 0 && side <= 2)("Wrong side number %d!\n", side);
+      TEST_EXIT_DBG(vertex >= 0 && vertex <= 2)("Wrong vertex number %d!\n", vertex);
+
       static int positionOfVertex[3][3] = {{-1, 0, 1}, {1, -1, 0}, {0, 1, -1}};
       return positionOfVertex[side][vertex];
     }
 
     inline int getEdgeOfFace(int face, int edge) const 
     {
+      FUNCNAME("Triangle::getEdgeOfFace()");
       TEST_EXIT_DBG(face == 0)("face must be zero at triangle\n");
       TEST_EXIT_DBG(edge >= 0 && edge < 3)("invalid edge\n");
+
       return edge;
     }