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@@ -237,7 +237,7 @@ See [examples](examples).
 - [voronoi/vrn2_from](https://openhome.cc/eGossip/OpenSCAD/lib2x-vrn2_from.html)
 - [voronoi/vrn2_space](https://openhome.cc/eGossip/OpenSCAD/lib2x-vrn2_space.html)
 - [voronoi/vrn2_cells_from](https://openhome.cc/eGossip/OpenSCAD/lib2x-vrn2_cells_from.html)
-- voronoi/vrn2_cells_space
+- [voronoi/vrn2_cells_space](https://openhome.cc/eGossip/OpenSCAD/lib2x-vrn2_cells_space.html)
 - voronoi/vrn3_from
 - voronoi/vrn3_space
 
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+# vrn2_cells_space
+
+Creats cell shapes of Voronoi in the first quadrant. You specify a space and a grid width. The center of each cell will be distributed in each grid randomly.
+
+**Since:** 2.4
+
+## Parameters
+
+- `size` : 2 value array [x, y], rectangle with dimensions x and y.
+- `grid_w` : The width of each grid. If it can split `size` equally, the voronoi diagram is seamless at the junction of top-bottom and left-right. 
+- `seed` : Seed value for random number generator for repeatable results.
+
+## Examples
+
+    use <hull_polyline2d.scad>;
+    use <voronoi/vrn2_cells_space.scad>;
+
+    size = [20, 20];
+    grid_w = 5;
+    cells = vrn2_cells_space(size, grid_w);
+
+    for(cell = cells) {
+        cell_pt = cell[0];
+        cell_poly = cell[1];
+
+        linear_extrude(1)
+            hull_polyline2d(concat(cell_poly, [cell_poly[0]]), width = 1);
+        
+        color(rands(0, 1, 3))
+        translate(cell_pt)    
+        linear_extrude(2, scale = 0.8)
+        translate(-cell_pt)    
+            polygon(cell_poly);  
+    }
+
+![vrn2_cells_space](images/lib2x-vrn2_cells_space-1.JPG)
+
+    use <hull_polyline3d.scad>;
+    use <ptf/ptf_torus.scad>;
+    use <voronoi/vrn2_cells_space.scad>;
+    
+    size = [40, 80];
+    grid_w = 5;
+    cells = vrn2_cells_space(size, grid_w);
+
+    $fn = 4;
+
+    for(cell = cells) {
+        cell_poly = [for(p = cell[1]) ptf_torus(size, p, [10, 5], [360, 360])];
+
+        hull_polyline3d(cell_poly, thickness = 1);
+    }
+    
+![vrn2_cells_space](images/lib2x-vrn2_cells_space-2.JPG)
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