consists of setting the \b length of segments, which will approximate these
edges, and the \b precision of rounding.
-The \b precision parameter is used to round a number of segments,
-calculated by dividing the edge length by the specified \b length of
-segment, to the higher integer if the remainder exceeds the precision
-and to the lower integer otherwise. Use value 0.5 to provide rounding
-to the nearest integer, 1.0 for the lower integer, 0.0 for the higher
-integer. Default value is 1e-07.
+The \b precision parameter is used to round a <em>number of segments</em>,
+calculated by dividing the <em>edge length</em> by the specified \b length of
+segment, to the higher integer if the \a remainder exceeds the \b precision
+and to the lower integer otherwise. <br>
+Use value 0.5 to provide rounding to the nearest integer, 1.0 for the lower integer, 0.0 for the higher integer. Default value is 1e-07.
+
+For example: if <em>edge length</em> is 10.0 and the segment \b length
+is 3.0 then their division gives 10./3. = 3.33(3) and the \a remainder is 0.33(3).
+If \b precision is less than 0.33(3) then the edge is divided into 3 segments.
+If \b precision is more than 0.33(3) then the edge is divided into 4 segments.
+
\image html image41.gif
distribution as blue crosses. The node distribution is computed in the
same way as for
\ref analyticdensity_anchor "Distribution with Analytic Density". You
-can select the <b>Conversion mode</b> from\b Exponent and <b>Cut
+can select the <b>Conversion mode</b> from \b Exponent and <b>Cut
negative</b>.
\image html distributionwithtabledensity.png
location of a set of edges within the model.
<b>Propagation chains</b> group allows defining <b>Reversed Edges</b>
-for splitting opposite edges of quadrilateral faces
-in a logically uniform direction. When this group is
-activated, the list is filled with propagation chains found within the
-model. When a chain is selected in the list its edges are
-shown in the Viewer with arrows, which enables choosing a common
-direction for all chain edges. \b Reverse button inverts the common
-direction of chain edges. If \b Add button is active, some
-edges of a chain have a different direction, so you can click \b Add
-button to add them to <b>Reversed Edges</b> list.
+for splitting opposite edges of quadrilateral faces in a logically
+uniform direction. When this group is activated, the list is filled
+with propagation chains found within the shape on which a hypothesis
+is assigned. When a chain is selected in the list its edges are shown
+in the Viewer with arrows, which enables choosing a common direction
+for all chain edges. \b Reverse button inverts the common direction of
+chain edges. \b Add button is active if some edges of a chain have a
+different direction, so you can click \b Add button to add them
+to <b>Reversed Edges</b> list.
\image html propagation_chain.png "The whole geometry and a propagation chain"
+\note Alternatively, uniform direction of edges of one propagation
+chain can be achieved by
+\ref constructing_submeshes_page "definition of a sub-mesh" on one
+edge of the chain and assigning a
+\ref propagation_anchor "Propagation" additional hypothesis.
+Orientation of this edge (and hence of all the rest edges of the chain) can be
+controlled by using <b>Reversed Edges</b> field.
+
*/
