- which is visible in \b 2D mode only, every node of selected
- elements is extruded along the \a average of the \a normal vectors to
- the faces sharing the node.</li>
- <ul>
- <li>Specify the \b Distance of extrusion (it can be negative),</li>
- <li>Use <b>Along average normal</b> check-box to specify along
- what vector the distance is measured. If it is \a activated the
- distance is measured along the average normal mentioned
- above. If it is \a deactivated every node is extruded along the
- average normal till its intersection with the virtual plane got
- by translation of the face sharing the node along its own normal
- by the distance. <br>
- The picture below shows a cross-section of a 2D mesh extruded
- with <b>Along average normal</b> activated (to the left) and
- deactivated (to the right).
-
- \image html extrusionbynormal_alongavgnorm.png
- <p></li>
- <li>Using <b>Use only input elements</b> check-box to specify what
- elements to use to compute the average normal. If it is \a
- activated only selected faces, among faces sharing the node,
- are used to compute the average normal at the node. Else all
- faces sharing the node are used. <br>
- The picture below shows a cross-section of a 2D mesh the upper
- plane of which is extruded with <b>Use only input elements</b>
- activated (to the left) and deactivated (to the right).
-
- \image html extrusionbynormal_useonly.png
- <p></li>
+ every node of the selected faces is extruded along the \a average
+ of the \a normal vectors to the faces sharing the node. (Nodes and
+ edges cannot be extruded in this mode.)
+ <ul>
+ <li>Specify the \b Distance of extrusion (it can be negative),</li>
+ <li>Use <b>Along average normal</b> check-box to specify along
+ which vector the distance is measured.
+ <ul>
+ <li>If it is \a activated the distance is measured along the
+ average normal mentioned above. </li>
+ <li>If it is \a deactivated every node is extruded along the
+ average normal till its intersection with a virtual plane obtained
+ by translation of the face sharing the node along its own normal
+ by the \b Distance.</li>
+ </ul>
+ The picture below shows a cross-section of a 2D mesh extruded
+ with <b>Along average normal</b> activated (to the left) and
+ deactivated (to the right).
+
+ \image html extrusionbynormal_alongavgnorm.png "'Along average normal' activated (to the left) and deactivated (to the right)"
+ <p></li>
+
+ <li><b>Use only input elements</b> check-box specifies what
+ elements will be used to compute the average normal.<ul>
+ <li> If it is \a activated only selected faces, among faces
+ sharing the node, are used to compute the average normal at
+ the node. </li>
+ <li>Else all faces sharing the node are used.</li></ul>
+
+ The picture below shows a cross-section of a 2D mesh the upper
+ plane of which is extruded with <b>Use only input elements</b>
+ activated (to the left) and deactivated (to the right).
+
+ \image html extrusionbynormal_useonly.png "'Use only input elements' activated (to the left) and deactivated (to the right)"
+ <p></li>
+ </li>