diff --git a/doc/salome/gui/GEOM/input/check_compound_of_blocks.doc b/doc/salome/gui/GEOM/input/check_compound_of_blocks.doc
index d903fc1ba..486184871 100644
--- a/doc/salome/gui/GEOM/input/check_compound_of_blocks.doc
+++ b/doc/salome/gui/GEOM/input/check_compound_of_blocks.doc
@@ -2,7 +2,8 @@
\page check_compound_of_blocks_page Check Compound of Blocks
-This operation checks whether a shape is a compound of glued blocks.
+This operation checks whether a shape is a compound of glued blocks
+and tries to improve the shape to make it include only valid blocks.
\image html measures10.png
@@ -27,7 +28,15 @@ In this dialog:
- Not glued;
- Not connected;
- Extra or degenerated edge.
-- Incriminated Sub-shapes field outputs the list of sub-shapes that cause problem. It is possible to select them in the list and publish in the study for further analysis by clicking \b Apply or Apply and Close button.
+- Incriminated Sub-shapes field outputs the list of sub-shapes that cause problem.
+- \b Apply and Apply and Close buttons launch an improving process
+and publish a result shape which includes valid blocks only. The
+improving process tries to
+ - remove seam edges and degenerated edges of surfaces of revolution;
+ - re-approximate surfaces to exclude singularities on boundaries;
+ - unite edges and faces;
+ - glue faces.
+
\n TUI Command:
@@ -38,4 +47,4 @@ is returned, and encountered errors are printed in the python console.
See also a \ref tui_check_compound_of_blocks_page "TUI example".
-*/
\ No newline at end of file
+*/
diff --git a/doc/salome/gui/GEOM/input/check_self_intersections.doc b/doc/salome/gui/GEOM/input/check_self_intersections.doc
index f806d4dd6..c92695a10 100644
--- a/doc/salome/gui/GEOM/input/check_self_intersections.doc
+++ b/doc/salome/gui/GEOM/input/check_self_intersections.doc
@@ -8,7 +8,7 @@
There are two ways to check self-intersections.
\anchor check_self_intersections_topological
-