diff --git a/src/OpenMesh/Core/Mesh/TriMeshT.hh b/src/OpenMesh/Core/Mesh/TriMeshT.hh
index 2b108e7d..5784fb2f 100644
--- a/src/OpenMesh/Core/Mesh/TriMeshT.hh
+++ b/src/OpenMesh/Core/Mesh/TriMeshT.hh
@@ -178,9 +178,11 @@ public:
   /** \brief Vertex Split: inverse operation to collapse().
    *
    * Insert the new vertex at position v0. The vertex will be added
-   * as the inverse of the vertex split. The faces above the split
+   * as the inverse of the edge collapse. The faces above the split
    * will be correctly attached to the two new edges
    *
+   * <pre>
+   *
    * Before:
    * v_l     v0     v_r
    *  x      x      x
@@ -205,6 +207,8 @@ public:
    *         x
    *         v1
    *
+   * </pre>
+   *
    * @param _v0_point Point position for the new point
    * @param _v1       Vertex that will be split
    * @param _vl       Left vertex handle
@@ -218,9 +222,11 @@ public:
   /** \brief Vertex Split: inverse operation to collapse().
    *
    * Insert the new vertex at position v0. The vertex will be added
-   * as the inverse of the vertex split. The faces above the split
+   * as the inverse of the edge collapse. The faces above the split
    * will be correctly attached to the two new edges
    *
+   * <pre>
+   *
    * Before:
    * v_l     v0     v_r
    *  x      x      x
@@ -245,6 +251,8 @@ public:
    *         x
    *         v1
    *
+   * </pre>
+   *
    * @param _v0 Vertex handle for the newly inserted point (Input has to be unconnected!)
    * @param _v1 Vertex that will be split
    * @param _vl Left vertex handle