<ol>
<li>Select a mesh or a sub-mesh in the Object Browser or in the
Viewer.</li>
-<li>From the Modification menu choose <b> Convert to/from Quadratic
-Mesh item </b>, or click <em>"Convert to/from quadratic"</em> button in the
-toolbar.
+<li>From the Modification menu or from the contextual menu in the
+ Object Browser choose <b> Convert to/from Quadratic Mesh</b> item,
+ or click <em>"Convert to/from quadratic"</em> button in the
+ toolbar.
<center>
\image html image154.png
<ul>
<li>If it is necessary to convert a linear mesh to quadratic or a quadratic
- mesh to linear. **Convert to bi-quadratic** option does the same as
- **Convert to quadratic** except for that TRIA7, QUAD9 and HEXA27
- elements are created instead of TRIA6, QUAD8, and HEXA20 elements
- respectively. Note that the choice is available only if the selected
- mesh (or sub-mesh) contains both quadratic and linear elements, else the
- direction of conversion is selected automatically.</li>
+ mesh to linear. **Convert to bi-quadratic** creates some types of quadratic
+ elements with additional central nodes: TRIA7, QUAD9 and HEXA27
+ elements instead of TRIA6, QUAD8, and HEXA20 elements
+ respectively.</li>
<li>If it is necessary to place **medium nodes** of the quadratic mesh **on the
- geometry** (meshed object). This option is relevant for conversion to
+ geometry** (meshed shape). This option is relevant for conversion to
quadratic provided that the mesh is based on a geometry (not imported
- from file).</li>
+ from file).</li>
</ul>
\image html image156.gif
