diff --git a/src/m_mirror.scad b/src/m_mirror.scad
index cc70e5d0..11ec7fed 100644
--- a/src/m_mirror.scad
+++ b/src/m_mirror.scad
@@ -1,3 +1,13 @@
+/**
+* m_mirror.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-m_mirror.html
+*
+**/
+
 function m_mirror(v) = 
     let(
         nv = v / norm(v),
diff --git a/src/m_multiply.scad b/src/m_multiply.scad
index 1ba62194..aff773a2 100644
--- a/src/m_multiply.scad
+++ b/src/m_multiply.scad
@@ -1,3 +1,13 @@
+/**
+* m_multiply.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-m_multiply.html
+*
+**/
+
 include <__private__/__m_multiply.scad>;
 
 function m_multiply(ma, mb) = __m_multiply(ma, mb);
\ No newline at end of file
diff --git a/src/m_rotation.scad b/src/m_rotation.scad
index e58420f3..7c0ff818 100644
--- a/src/m_rotation.scad
+++ b/src/m_rotation.scad
@@ -1,3 +1,13 @@
+/**
+* m_rotation.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-m_rotation.html
+*
+**/
+
 include <__private__/__m_multiply.scad>;
 
 function _q_rotation(a, v) = 
diff --git a/src/m_scaling.scad b/src/m_scaling.scad
index d362d7e0..bb334823 100644
--- a/src/m_scaling.scad
+++ b/src/m_scaling.scad
@@ -1,3 +1,13 @@
+/**
+* m_scaling.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-m_scaling.html
+*
+**/
+
 function _to_vect(s) =
      len(s) == 3 ? s : (
          len(s) == 2 ? [s[0], s[1], 1] : (
diff --git a/src/m_shearing.scad b/src/m_shearing.scad
index 82a18b26..d09c10e6 100644
--- a/src/m_shearing.scad
+++ b/src/m_shearing.scad
@@ -1,3 +1,13 @@
+/**
+* m_shearing.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-m_shearing.html
+*
+**/
+
 include <__private__/__m_multiply.scad>;
 include <__private__/__m_shearing.scad>;
 
diff --git a/src/m_translation.scad b/src/m_translation.scad
index 5a199a72..d09950e0 100644
--- a/src/m_translation.scad
+++ b/src/m_translation.scad
@@ -1,3 +1,13 @@
+/**
+* m_translation.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-m_translation.html
+*
+**/
+
 function _to_vect(v) =
      len(v) == 3 ? v : (
          len(v) == 2 ? [v[0], v[1], 0] : (
diff --git a/src/shear.scad b/src/shear.scad
index 780e5009..ad853543 100644
--- a/src/shear.scad
+++ b/src/shear.scad
@@ -1,3 +1,13 @@
+/**
+* shear.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib-shear.html
+*
+**/
+
 include <__private__/__m_multiply.scad>;
 include <__private__/__m_shearing.scad>;