v.hull manual: 3D screenshot added

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@64188 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.hull/v.hull.html

@@ -12,11 +12,7 @@ composed of triangular faces.
 
 <center>
 <img src="v_hull.png" border="1"><br>
-<table border="0" width="590">
-<tr><td><center>
 Fig: Convex hull polygon created with <em>v.hull</em>
-</center></td></tr>
-</table>
 </center>
 
 <h2>EXAMPLE</h2>
@@ -38,8 +34,16 @@ d.vect random3d_a color=red
 
 d.vect random3d_b_hull
 d.vect random3d_b color=red
+
+# 3D view in wxGUI (g.gui)
 </pre></div>
 
+<center>
+<img src="v_hull_3d.png" border="1"><br>
+Fig: Convex hull in 3D from 3D points created with <em>v.hull</em>
+</center>
+
+
 <h2>REFERENCES</h2>
 
 <ul>