diff --git a/src/bend_extrude.scad b/src/bend_extrude.scad
index 2bd9f050..d9538c62 100644
--- a/src/bend_extrude.scad
+++ b/src/bend_extrude.scad
@@ -1,3 +1,13 @@
+/**
+* bend_extrude.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-bend_extrude.html
+*
+**/
+
 module bend_extrude(size, thickness, angle, frags = 24) {
     x = size[0];
     y = size[1];
diff --git a/src/in_polyline.scad b/src/in_polyline.scad
index d2e438ed..08bdaeba 100644
--- a/src/in_polyline.scad
+++ b/src/in_polyline.scad
@@ -1,3 +1,13 @@
+/**
+* in_polyline.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-in_polyline.html
+*
+**/
+
 include <__private__/__to3d.scad>;
 include <__private__/__in_line.scad>;
 
diff --git a/src/in_shape.scad b/src/in_shape.scad
index 8acf86c9..e4b1795a 100644
--- a/src/in_shape.scad
+++ b/src/in_shape.scad
@@ -1,4 +1,13 @@
-include <__private__/__to3d.scad>;
+/**
+* in_shape.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-in_shape.html
+*
+**/
+
 include <__private__/__lines_from.scad>;
 include <__private__/__in_line.scad>;
 
diff --git a/src/midpt_smooth.scad b/src/midpt_smooth.scad
index eaebcd97..ac816c12 100644
--- a/src/midpt_smooth.scad
+++ b/src/midpt_smooth.scad
@@ -1,3 +1,13 @@
+/**
+* midpt_smooth.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-midpt_smooth.html
+*
+**/
+
 function _midpt_smooth_sub(points, iend, i, closed = false) = 
     i == iend ? (
         closed ? [(points[i] + points[0]) / 2]
diff --git a/src/triangulate.scad b/src/triangulate.scad
index b4061a33..6aeec0c1 100644
--- a/src/triangulate.scad
+++ b/src/triangulate.scad
@@ -1,3 +1,12 @@
+/**
+* triangulate.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-triangulate.html
+*
+**/
 
 function _triangulate_in_triangle(p0, p1, p2, p) =
     let(
diff --git a/src/trim_shape.scad b/src/trim_shape.scad
index 9f7dc758..d1e175e6 100644
--- a/src/trim_shape.scad
+++ b/src/trim_shape.scad
@@ -1,3 +1,13 @@
+/**
+* trim_shape.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-trim_shape.html
+*
+**/
+
 include <__private__/__to3d.scad>;
 include <__private__/__line_intersection.scad>;
 include <__private__/__in_line.scad>;
diff --git a/src/voronoi2d.scad b/src/voronoi2d.scad
index 0d2cf1f2..52fc6ff8 100644
--- a/src/voronoi2d.scad
+++ b/src/voronoi2d.scad
@@ -1,3 +1,13 @@
+/**
+* voronoi2d.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-voronoi2d.html
+*
+**/
+
 module voronoi2d(points, spacing = 1, r = 0, delta = 0, chamfer = false, region_type = "square") {
     xs = [for(p = points) p[0]];
     ys = [for(p = points) abs(p[1])];
diff --git a/src/voronoi3d.scad b/src/voronoi3d.scad
index 007a886f..072c34d7 100644
--- a/src/voronoi3d.scad
+++ b/src/voronoi3d.scad
@@ -1,3 +1,13 @@
+/**
+* voronoi3d.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-voronoi3d.html
+*
+**/
+
 include <__private__/__angy_angz.scad>;
 
 // slow but workable