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diff --git a/doc/salome/gui/SMESH/input/about_hypo.doc b/doc/salome/gui/SMESH/input/about_hypo.doc
index 578823bd6..b2dab5dbf 100644
--- a/doc/salome/gui/SMESH/input/about_hypo.doc
+++ b/doc/salome/gui/SMESH/input/about_hypo.doc
@@ -2,34 +2,51 @@
 
 \page about_hypo_page About Hypotheses
 
-\n \b Hypotheses represent boundary conditions which will be taken into
-account at calculations of meshes or submeshes basing on geometrical
-objects. These hypotheses allow you to manage the level of detail of
-the resulting meshes or submeshes: when applying different hypotheses
-with different parameters you can preset the quantity of meshing
+\b Hypotheses represent boundary conditions which will be taken into
+account by meshing algorithms.
+The hypotheses allow you to manage the level of detail of
+the resulting mesh: when applying different hypotheses
+with different parameters you can preset the quantity or size of
 elements which will compose your mesh. So, it will be possible to
-generate a rough or a more refined mesh or submesh.
+generate a coarse or a more refined mesh.
 
-In \b MESH there are the following Basic Hypotheses (to introduce
-them, you operate numerical values):
+The choice of a hypothesis depends on the selected algorithm.
+
+Hypotheses are created during creation and edition of 
+\ref constructing_meshes_page "meshes" and
+\ref constructing_submeshes_page "sub-mesh". 
+Once created a hypotheses can be reused during creation and
+edition of other meshes and sub-meshes. All created hypotheses and
+algorithms are present in the Object Browser in \a Hypotheses and
+\a Algorithms folders correspondingly. From the context menu of the
+hypothesis you can invoke a dialog for modification of its parameters,
+and \b Unassign command that will unassign the hypothesis from all
+the meshes and sub-meshes using it.
+Modification of any hypothesis parameter and unassignment of a
+hypothesis leads to automatic removal of elements generated with use
+of this hypothesis.
+
+In \b MESH there are the following Basic Hypotheses:
 <ul>
 <li>\subpage a1d_meshing_hypo_page "1D Hypotheses" (for meshing of 
 <b>edges</b>):</li>
 <ul>
-<li>\ref arithmetic_1d_anchor "Arithmetic 1D"</li>
-<li>\ref average_length_anchor "Average Length"</li>
-<li>\ref max_length_anchor "Max Size"</li>
-<li>\ref deflection_1d_anchor "Deflection 1D"</li>
 <li>\ref number_of_segments_anchor "Number of segments"</li>
+<li>\ref average_length_anchor "Local Length"</li>
+<li>\ref max_length_anchor "Max Size"</li>
+<li>\ref adaptive_1d_anchor "Adaptive"</li>
+<li>\ref arithmetic_1d_anchor "Arithmetic 1D"</li>
+<li>\ref geometric_1d_anchor "Geometric Progression"</li>
 <li>\ref start_and_end_length_anchor "Start and end length"</li>
+<li>\ref deflection_1d_anchor "Deflection 1D"</li>
 <li>\ref automatic_length_anchor "Automatic Length"</li>
+<li>\ref fixed_points_1d_anchor "Fixed points 1D"</li>
 </ul>
 <li>\subpage a2d_meshing_hypo_page "2D Hypotheses" (for meshing of <b>faces</b>):</li>
 <ul>
 <li>\ref max_element_area_anchor "Max Element Area"</li>
 <li>\ref length_from_edges_anchor "Length from Edges"</li>
-<li>\ref quadrangle_preference_anchor "Quadrangle Preference"</li>
-<li>\ref triangle_preference_anchor "Triangle Preference"</li>
+<li>\ref hypo_quad_params_anchor "Quadrangle Parameters"</li>
 </ul>
 <li>3D Hypothesis (for meshing of <b>volumes</b>):</li>
 <ul>
@@ -37,29 +54,14 @@ them, you operate numerical values):
 </ul>
 </ul>
 
-Some hypotheses are strictly combined with plug-in
-meshers and thus, work only with definite algorithms.
-<ul>
-<li>\subpage netgen_2d_3d_hypo_page</li> - work with NetGen algorithm.
-<li>\subpage ghs3d_hypo_page</li> - works with GHS3D algorithm.
-<li>\subpage ghs3dprl_hypo_page</li> - works with GHS3DPRL (tepal) algorithm.
-<li>\subpage blsurf_hypo_page</li> - works with BLSURF algorithm.
-</ul>
-
-There also exist  
-\subpage additional_hypo_page "Additional Hypotheses" used together
-with other hypotheses:
-<ul>
-<li>Propagation of 1D Hypothesis on opposite edges</li>
-<li>Non conform mesh allowed</li>
-<li>Quadratic mesh</li>
-</ul>
-
-The choice of a hypothesis depends on:
+There also exist
+\subpage additional_hypo_page "Additional Hypotheses":
 <ul>
-<li>the geometrical object (shape) which will be meshed</li>
-<li>the algorithm, which will be selected for meshing of this geometrical object (shape)</li>
+<li>\ref propagation_anchor "Propagation of 1D Hypothesis on opposite edges"</li>
+<li>\ref propagofdistribution_anchor "Propagation of Node Distribution on Opposite Edges"</li>
+<li>\ref viscous_layers_anchor "Viscous layers"</li>
+<li>\ref quadratic_mesh_anchor "Quadratic mesh"</li>
+<li>\ref quadrangle_preference_anchor "Quadrangle preference"</li>
 </ul>
 
- 
 */