-<li>if you wish to place medium nodes of the quadratic mesh on the
-geometry (meshed object). This option is active at convertion to
-qudratic mesh only and provided that the mesh is based on some
-geometry (not imported from the file).</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
+quadratic provided that the mesh is based on a geometry (not imported from file).</li>