length that changes in arithmetic progression (Lk = Lk-1 + d)
beginning from a given starting length and up to a given end length.
+The direction of the splitting is defined by the orientation of the underlying geometrical edge.
+<b>"Reverse Edges"</b> list box allows to specify the edges for which the splitting should be made
+in the direction opposing to their orientation. This list box is enabled only if the geometry object
+is selected for the meshing. In this case the user can select edges to be reversed either directly
+picking them in the 3D viewer or by selecting the edges or groups of edges in the Object browser.
+
\image html a-arithmetic1d.png
\image html b-ithmetic1d.png "Arithmetic 1D hypothesis - the size of mesh elements gradually increases"
mesh. Later these nodes will be used for meshing of the faces abutting
to these edges.
+The direction of the splitting is defined by the orientation of the underlying geometrical edge.
+<b>"Reverse Edges"</b> list box allows to specify the edges for which the splitting should be made
+in the direction opposing to their orientation. This list box is enabled only if the geometry object
+is selected for the meshing. In this case the user can select edges to be reversed either directly
+picking them in the 3D viewer or by selecting the edges or groups of edges in the Object browser.
+
\image html image46.gif
You can set the type of distribution for this hypothesis in the
constructed at segment ends location and 1D mesh elements are
constructed on them.
+The direction of the splitting is defined by the orientation of the underlying geometrical edge.
+<b>"Reverse Edges"</b> list box allows to specify the edges for which the splitting should be made
+in the direction opposing to their orientation. This list box is enabled only if the geometry object
+is selected for the meshing. In this case the user can select edges to be reversed either directly
+picking them in the 3D viewer or by selecting the edges or groups of edges in the Object browser.
+
\image html a-startendlength.png
\image html b-art_end_length.png "The lengths of the first and the last segment are strictly defined"
