X-Git-Url: http://git.salome-platform.org/gitweb/?p=modules%2Fsmesh.git;a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FSMESH%2Finput%2Fmeasurements.doc;h=0787b7c2083c929fb158ac1dade11715f7f3fcf5;hp=6514cf287ddd2dcb712b6866dc4203abf0cf0fcf;hb=fa3a593199ed2de967bebf43bd0a48858cbbd578;hpb=fc5cad90e2d4767d932d4a9cada3790eb844e6ab

diff --git a/doc/salome/gui/SMESH/input/measurements.doc b/doc/salome/gui/SMESH/input/measurements.doc
index 6514cf287..0787b7c20 100644
--- a/doc/salome/gui/SMESH/input/measurements.doc
+++ b/doc/salome/gui/SMESH/input/measurements.doc
@@ -64,6 +64,32 @@ viewer.
 
 \image html bnd_box_preview.png
 
+\section basic_properties_anchor Basic Properties
+
+This operation allows calculation of length, area or volume for the the selected
+object:
+- Length is calculated as a sum of length of all 1D elements;
+- Area id a sum of area of all 2D elements
+- Volume is a sum of volume of all 3D elements. 
+
+To start one of <b>Basic Properties</b> calculations, select <b>Length</b>, <b>Area</b> 
+or <b>Volume</b> item from <b>Measurements - Basic Properties</b> menu.
+
+\image html basic_props.png
+
+In the dialog box select the required type of calculation (length, area or volume), select
+the the object (mesh, sub-mesh or group) and press \em Compute button.
+
+The result of calculation will be shown in the bottom area of the
+dialog box.
+
+\note
+- If mesh consists of 3D elements only, its "length" and "area" will be 0.
+- As calculation result is a sum of length, area and volume of all mesh elements,
+  duplications are not taken into account; i.e. all duplicated elements
+  (elements built on the same set of nodes) will be included into the result.
+- Similarly, intersection of elements is not taken into account.
+
 <b>See Also</b> a sample TUI Script of a 
 \ref tui_measurements_page "Measurement operations".