X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=doc%2Fsalome%2Fgui%2FGEOM%2Finput%2Fcreating_point.doc;h=9844a3cff6892564c7c6416b6ff829df0ad8ff9a;hb=f4b5386b2ea36dbc789e4d31a877a11922b71fc8;hp=2ae82dc92fbcb12cd157f28639588295a3ee53ab;hpb=da4f09c4af295987d3e2debcdbc79e3773a4e0af;p=modules%2Fgeom.git

diff --git a/doc/salome/gui/GEOM/input/creating_point.doc b/doc/salome/gui/GEOM/input/creating_point.doc
index 2ae82dc92..9844a3cff 100644
--- a/doc/salome/gui/GEOM/input/creating_point.doc
+++ b/doc/salome/gui/GEOM/input/creating_point.doc
@@ -33,11 +33,17 @@ point is located in the middle of the edge.
 position of the point on the given edge.
 \image html point3.png
 
-Alternatively, it is possible to define the point by \b Edge and \b Length,
-the given length must not exceed the length of the edge. The orientation of the edge can be reversed.
-\n <b>TUI Command:</b> <em>geompy.MakeVertexOnCurveByLength(Edge,Length,Direction).</em>
-\n <b>Arguments:</b> Name + 1 edge  + 1 Length defining the
-position of the point on the given edge + 1 Direction for the calculation of the length (0 = forward, 2 = reversed).
+Alternatively, it is possible to define a point by an \b Edge and a \b Length.
+The \b Length defines the position of the point on the given edge. It
+can exceed the length of the edge or be negative. In this case the edge
+is extrapolated along its curve (except for bezier and b-spline
+curves). 
+The <b>Start Point</b> defines the direction for the length
+calculation (if not defined, the first vertex of
+Edge is used, else the vertex of Edge closest to StartPoint is used).
+\n <b>TUI Command:</b> <em>geompy.MakeVertexOnCurveByLength(Edge,Length,StartPoint=None).</em>
+\n <b>Arguments:</b> Name + 1 edge  + 1 Length  + 1 Point.
+
 \image html point3_3.png
 
 It is also possible to define 3D coordinates of the point