diff --git a/docs/yuidoc-p5-theme/assets/transformation-matrix-4-4.png b/docs/yuidoc-p5-theme/assets/transformation-matrix-4-4.png
new file mode 100644
index 0000000000..f4203b3312
Binary files /dev/null and b/docs/yuidoc-p5-theme/assets/transformation-matrix-4-4.png differ
diff --git a/lib/addons/p5.sound.js b/lib/addons/p5.sound.js
index ca19c190a9..a8a7e3f450 100644
--- a/lib/addons/p5.sound.js
+++ b/lib/addons/p5.sound.js
@@ -218,7 +218,7 @@ function getAudioContext() {
  *  example below. This method utilizes
  *  <a href="https://github.com/tambien/StartAudioContext">StartAudioContext
  *  </a>, a library by Yotam Mann (MIT Licence, 2016).</p>
- *  @param  {Element|Array}   [element(s)] This argument can be an Element,
+ *  @param  {Element|Array}   [elements] This argument can be an Element,
  *                                Selector String, NodeList, p5.Element,
  *                                jQuery Element, or an Array of any of those.
  *  @param  {Function} [callback] Callback to invoke when the AudioContext
diff --git a/src/core/shape/vertex.js b/src/core/shape/vertex.js
index 775889f3dc..a02c80b6ad 100644
--- a/src/core/shape/vertex.js
+++ b/src/core/shape/vertex.js
@@ -958,7 +958,7 @@ p5.prototype.quadraticVertex = function(...args) {
  * @method vertex
  * @param  {Number} x
  * @param  {Number} y
- * @param  {Number} z   z-coordinate of the vertex.
+ * @param  {Number} [z]   z-coordinate of the vertex.
  *                       Defaults to 0 if not specified.
  * @chainable
  */
@@ -967,8 +967,8 @@ p5.prototype.quadraticVertex = function(...args) {
  * @param  {Number} x
  * @param  {Number} y
  * @param  {Number} [z]
- * @param  {Number} u   the vertex's texture u-coordinate
- * @param  {Number} v   the vertex's texture v-coordinate
+ * @param  {Number} [u]   the vertex's texture u-coordinate
+ * @param  {Number} [v]   the vertex's texture v-coordinate
  * @chainable
  */
 p5.prototype.vertex = function(x, y, moveTo, u, v) {
diff --git a/src/core/transform.js b/src/core/transform.js
index 1fe637e5d9..180acdaaf2 100644
--- a/src/core/transform.js
+++ b/src/core/transform.js
@@ -24,13 +24,41 @@ import p5 from './main';
  * > <img style="max-width: 150px" src="assets/transformation-matrix.png"
  * alt="The transformation matrix used when applyMatrix is called"/>
  *
+ * <img style="max-width: 300px" src="assets/transformation-matrix-4-4.png"
+ * alt="The transformation matrix used when applyMatrix is called with 4x4 matrix"/>
+ *
+ * @method applyMatrix
+ * @param  {Array} arr an array of numbers - should be 6 or 16 length (2*3 or 4*4 matrix values)
+ * @chainable
+ */
+/**
+ * @method applyMatrix
+ * @param  {Number} a numbers which define the 2×3 or 4x4 matrix to be multiplied
+ * @param  {Number} b numbers which define the 2×3 or 4x4 matrix to be multiplied
+ * @param  {Number} c numbers which define the 2×3 or 4x4 matrix to be multiplied
+ * @param  {Number} d numbers which define the 2×3 or 4x4 matrix to be multiplied
+ * @param  {Number} e numbers which define the 2×3 or 4x4 matrix to be multiplied
+ * @param  {Number} f numbers which define the 2×3 or 4x4 matrix to be multiplied
+ * @chainable
+ */
+/**
  * @method applyMatrix
- * @param  {Number|Array} a numbers which define the 2×3 matrix to be multiplied, or an array of numbers
- * @param  {Number} b numbers which define the 2×3 matrix to be multiplied
- * @param  {Number} c numbers which define the 2×3 matrix to be multiplied
- * @param  {Number} d numbers which define the 2×3 matrix to be multiplied
- * @param  {Number} e numbers which define the 2×3 matrix to be multiplied
- * @param  {Number} f numbers which define the 2×3 matrix to be multiplied
+ * @param  {Number} a
+ * @param  {Number} b
+ * @param  {Number} c
+ * @param  {Number} d
+ * @param  {Number} e
+ * @param  {Number} f
+ * @param  {Number} g numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} h numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} i numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} j numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} k numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} l numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} m numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} n numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} o numbers which define the 4x4 matrix to be multiplied
+ * @param  {Number} p numbers which define the 4x4 matrix to be multiplied
  * @chainable
  * @example
  * <div>