add doc

README.md

@@ -381,4 +381,4 @@ These examples incubate dotSCAD and dotSCAD refactors these examples. See [examp
 [**polyhedra/octahedron**(radius[, detail])](https://openhome.cc/eGossip/OpenSCAD/lib3x-polyhedra_octahedron.html) | create a octahedron.
 polyhedra/dodecahedron | create a dodecahedron.
 polyhedra/icosahedron | create a icosahedron.
-polyhedra/superellipsoid | create a superellipsoid.
+[**polyhedra/superellipsoid**(radius[, detail])](https://openhome.cc/eGossip/OpenSCAD/lib3x-polyhedra_superellipsoid.html) | create a superellipsoid.

docs/lib3x-polyhedra_superellipsoid.md

@@ -0,0 +1,27 @@
+# superellipsoid
+
+Creates a [superellipsoid](https://en.wikipedia.org/wiki/Superellipsoid).
+
+**Since:** 3.2
+
+## Parameters
+
+- `e` :  The east-west parameter.
+- `n` : The north-south parameter.
+
+## Examples
+
+	use <polyhedra/superellipsoid.scad>;
+
+	$fn = 24;
+
+	step = 0.5;
+
+	for(e = [0:step:4]) {
+		for(n = [0:step:4])
+			translate([e / step, n / step] * 3)
+			superellipsoid(e, n);
+	}
+
+![superellipsoid](images/lib3x-polyhedra_superellipsoid-1.JPG)
+

src/polyhedra/superellipsoid.scad

@@ -1,17 +1,16 @@
+/**
+* superellipsoid.scad
+*
+* @copyright Justin Lin, 2021
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib3x-superellipsoid.html
+*
+**/
+
 use <../__comm__/__frags.scad>;
 use <../sweep.scad>;
 
-// use <polyhedra/superellipsoid.scad>;
-
-// $fn = 24;
-
-// for(e = [0:.5:4]) {
-//     for(n = [0:.5:3])
-//         translate([e / .5, n / .5] * 3)
-//            superellipsoid(e, n);
-// }
-
-
 module superellipsoid(e, n) {
 	function _sgn(x) = 
 		x < 0 ? -1 :