diff --git a/src/utilities/conversion.js b/src/utilities/conversion.js
index 983d7ce61b..f0524ec6f5 100644
--- a/src/utilities/conversion.js
+++ b/src/utilities/conversion.js
@@ -8,29 +8,79 @@
 import p5 from '../core/main';
 
 /**
- * Converts a string to its floating point representation. The contents of a
- * string must resemble a number, or NaN (not a number) will be returned.
- * For example, float("1234.56") evaluates to 1234.56, but float("giraffe")
- * will return NaN.
+ * Converts a `String` to a floating point (decimal) `Number`.
  *
- * When an array of values is passed in, then an array of floats of the same
- * length is returned.
+ * `float()` converts strings that resemble numbers, such as `'12.34'`, into
+ * numbers.
+ *
+ * The parameter, `str`, is the string value to convert. For example, calling
+ * `float('12.34')` returns the number `12.34`.  If an array of strings is
+ * passed, as in `float(['12.34', '56.78'])`, then an array of numbers will be
+ * returned.
+ *
+ * Note: If a string can't be converted to a number, as in `float('giraffe')`,
+ * then the value `NaN` (not a number) will be returned.
  *
  * @method float
- * @param {String}  str float string to parse
- * @return {Number}     floating point representation of string
+ * @param {String}  str string to convert.
+ * @return {Number} converted number.
+ *
  * @example
- * <div><code>
- * let str = '20';
- * let diameter = float(str);
- * ellipse(width / 2, height / 2, diameter, diameter);
- * describe('20-by-20 white ellipse in the center of the canvas');
- * </code></div>
- * <div class='norender'><code>
- * print(float('10.31')); // 10.31
- * print(float('Infinity')); // Infinity
- * print(float('-Infinity')); // -Infinity
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a string variable.
+ *   let original = '12.3';
+ *
+ *   // Convert the string to a number.
+ *   let converted = float(original);
+ *
+ *   // Double the converted value.
+ *   let twice = converted * 2;
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(12);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} × 2 = ${twice}`, 50, 50);
+ *
+ *   describe('The text "12.3 × 2 = 24.6" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of strings.
+ *   let original = ['60', '30', '15'];
+ *
+ *   // Convert the strings to numbers.
+ *   let diameters = float(original);
+ *
+ *   for (let d of diameters) {
+ *     // Draw a circle.
+ *     circle(50, 50, d);
+ *   }
+ *
+ *   describe('Three white, concentric circles on a gray background.');
+ * }
+ * </code>
+ * </div>
+ */
+/**
+ * @method float
+ * @param {String[]} ns array of strings to convert.
+ * @return {Number[]} converted numbers.
  */
 p5.prototype.float = function(str) {
   if (str instanceof Array) {
@@ -40,32 +90,128 @@ p5.prototype.float = function(str) {
 };
 
 /**
- * Converts a boolean, string, or float to its integer representation.
- * When an array of values is passed in, then an int array of the same length
- * is returned.
+ * Converts a `Boolean`, `String`, or decimal `Number` to an integer.
+ *
+ * `int()` converts values to integers. Integers are positive or negative
+ * numbers without decimals. If the original value has decimals, as in -34.56,
+ * they're removed to produce an integer such as -34.
+ *
+ * The parameter, `n`, is the value to convert. If `n` is a Boolean, as in
+ * `int(false)` or `int(true)`, then the number 0 (`false`) or 1 (`true`) will
+ * be returned. If `n` is a string or number, as in `int('45')` or
+ * `int(67.89)`, then an integer will be returned. If an array is passed, as
+ * in `int([12.34, 56.78])`, then an array of integers will be returned.
+ *
+ * Note: If a value can't be converted to a number, as in `int('giraffe')`,
+ * then the value `NaN` (not a number) will be returned.
  *
  * @method int
- * @param {String|Boolean|Number}       n value to parse
- * @param {Integer}       [radix] the radix to convert to (default: 10)
- * @return {Number}                     integer representation of value
+ * @param {String|Boolean|Number} n value to convert.
+ * @return {Number} converted number.
  *
  * @example
- * <div class='norender'><code>
- * print(int('10')); // 10
- * print(int(10.31)); // 10
- * print(int(-10)); // -10
- * print(int(true)); // 1
- * print(int(false)); // 0
- * print(int([false, true, '10.3', 9.8])); // [0, 1, 10, 9]
- * print(int(Infinity)); // Infinity
- * print(int('-Infinity')); // -Infinity
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a Boolean variable.
+ *   let original = false;
+ *
+ *   // Convert the Boolean to an integer.
+ *   let converted = int(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} : ${converted}`, 50, 50);
+ *
+ *   describe('The text "false : 0" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a string variable.
+ *   let original = '12.34';
+ *
+ *   // Convert the string to an integer.
+ *   let converted = int(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(14);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} ≈ ${converted}`, 50, 50);
+ *
+ *   describe('The text "12.34 ≈ 12" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a decimal number variable.
+ *   let original = 12.34;
+ *
+ *   // Convert the decimal number to an integer.
+ *   let converted = int(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(14);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} ≈ ${converted}`, 50, 50);
+ *
+ *   describe('The text "12.34 ≈ 12" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of strings.
+ *   let original = ['60', '30', '15'];
+ *
+ *   // Convert the strings to integers.
+ *   let diameters = int(original);
+ *
+ *   for (let d of diameters) {
+ *     // Draw a circle.
+ *     circle(50, 50, d);
+ *   }
+ *
+ *   describe('Three white, concentric circles on a gray background.');
+ * }
+ * </code>
+ * </div>
  */
 /**
  * @method int
- * @param {Array} ns                    values to parse
- * @param {Integer}       [radix]
- * @return {Number[]}                   integer representation of values
+ * @param {Array} ns values to convert.
+ * @return {Number[]} converted numbers.
  */
 p5.prototype.int = function(n, radix = 10) {
   if (n === Infinity || n === 'Infinity') {
@@ -84,22 +230,105 @@ p5.prototype.int = function(n, radix = 10) {
 };
 
 /**
- * Converts a boolean, string or number to its string representation.
- * When an array of values is passed in, then an array of strings of the same
- * length is returned.
+ * Converts a `Boolean` or `Number` to `String`.
+ *
+ * `str()` converts values to strings. See the
+ * <a href="#/p5/String">String</a> reference page for guidance on using
+ * template literals instead.
+ *
+ * The parameter, `n`, is the value to convert. If `n` is a Boolean, as in
+ * `str(false)` or `str(true)`, then the value will be returned as a string,
+ * as in `'false'` or `'true'`. If `n` is a number, as in `str(123)`, then its
+ * value will be returned as a string, as in `'123'`. If an array is passed,
+ * as in `str([12.34, 56.78])`, then an array of strings will be returned.
  *
  * @method str
- * @param {String|Boolean|Number|Array} n value to parse
- * @return {String}                     string representation of value
+ * @param {String|Boolean|Number} n value to convert.
+ * @return {String} converted string.
+ *
  * @example
- * <div class='norender'><code>
- * print(str('10')); // "10"
- * print(str(10.31)); // "10.31"
- * print(str(-10)); // "-10"
- * print(str(true)); // "true"
- * print(str(false)); // "false"
- * print(str([true, '10.3', 9.8])); // [ "true", "10.3", "9.8" ]
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a Boolean variable.
+ *   let original = false;
+ *
+ *   // Convert the Boolean to a string.
+ *   let converted = str(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} : ${converted}`, 50, 50);
+ *
+ *   describe('The text "false : false" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a number variable.
+ *   let original = 123;
+ *
+ *   // Convert the number to a string.
+ *   let converted = str(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} = ${converted}`, 50, 50);
+ *
+ *   describe('The text "123 = 123" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of numbers.
+ *   let original = [12, 34, 56];
+ *
+ *   // Convert the numbers to strings.
+ *   let strings = str(original);
+ *
+ *   // Create an empty string variable.
+ *   let final = '';
+ *
+ *   // Concatenate all the strings.
+ *   for (let s of strings) {
+ *     final += s;
+ *   }
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the concatenated string.
+ *   text(final, 50, 50);
+ *
+ *   describe('The text "123456" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
  */
 p5.prototype.str = function(n) {
   if (n instanceof Array) {
@@ -110,24 +339,119 @@ p5.prototype.str = function(n) {
 };
 
 /**
- * Converts a number or string to its boolean representation.
- * For a number, any non-zero value (positive or negative) evaluates to true,
- * while zero evaluates to false. For a string, the value "true" evaluates to
- * true, while any other value evaluates to false. When an array of number or
- * string values is passed in, then a array of booleans of the same length is
- * returned.
+ * Converts a `String` or `Number` to a `Boolean`.
+ *
+ * `boolean()` converts values to `true` or `false`.
+ *
+ * The parameter, `n`, is the value to convert. If `n` is a string, then
+ * `boolean('true')` will return `true` and every other string value will
+ * return `false`. If `n` is a number, then `boolean(0)` will return `false`
+ * and every other numeric value will return `true`. If an array is passed, as
+ * `in boolean([0, 1, 'true', 'blue'])`, then an array of Boolean values will
+ * be returned.
  *
  * @method boolean
- * @param {String|Boolean|Number|Array} n value to parse
- * @return {Boolean}                    boolean representation of value
+ * @param {String|Boolean|Number} n value to convert.
+ * @return {Boolean} converted Boolean value.
+ *
  * @example
- * <div class='norender'><code>
- * print(boolean(0)); // false
- * print(boolean(1)); // true
- * print(boolean('true')); // true
- * print(boolean('abcd')); // false
- * print(boolean([0, 12, 'true'])); // [false, true, true]
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a number variable.
+ *   let original = 0;
+ *
+ *   // Convert the number to a Boolean value.
+ *   let converted = boolean(original);
+ *
+ *   // Style the circle based on the converted value.
+ *   if (converted === true) {
+ *     fill('blue');
+ *   } else {
+ *     fill('red');
+ *   }
+ *
+ *   // Draw the circle.
+ *   circle(50, 50, 40);
+ *
+ *   describe('A red circle on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a string variable.
+ *   let original = 'true';
+ *
+ *   // Convert the string to a Boolean value.
+ *   let converted = boolean(original);
+ *
+ *   // Style the circle based on the converted value.
+ *   if (converted === true) {
+ *     fill('blue');
+ *   } else {
+ *     fill('red');
+ *   }
+ *
+ *   // Draw the circle.
+ *   circle(50, 50, 40);
+ *
+ *   describe('A blue circle on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of values.
+ *   let original = [0, 'hi', 123, 'true'];
+ *
+ *   // Convert the array to a Boolean values.
+ *   let converted = boolean(original);
+ *
+ *   // Iterate over the array of converted Boolean values.
+ *   for (let i = 0; i < converted.length; i += 1) {
+ *
+ *     // Style the circle based on the converted value.
+ *     if (converted[i] === true) {
+ *       fill('blue');
+ *     } else {
+ *       fill('red');
+ *     }
+ *
+ *     // Calculate the x-coordinate.
+ *     let x = (i + 1) * 20;
+ *
+ *     // Draw the circle.
+ *     circle(x, 50, 15);
+ *   }
+ *
+ *   describe(
+ *     'A row of circles on a gray background. The two circles on the left are red and the two on the right are blue.'
+ *   );
+ * }
+ * </code>
+ * </div>
+ */
+/**
+ * @method boolean
+ * @param {Array} ns values to convert.
+ * @return {Boolean[]} converted Boolean values.
  */
 p5.prototype.boolean = function(n) {
   if (typeof n === 'number') {
@@ -142,31 +466,139 @@ p5.prototype.boolean = function(n) {
 };
 
 /**
- * Converts a number, string representation of a number, or boolean to its byte
- * representation. A byte can be only a whole number between -128 and 127, so
- * when a value outside of this range is converted, it wraps around to the
- * corresponding byte representation. When an array of number, string or boolean
- * values is passed in, then an array of bytes the same length is returned.
+ * Converts a `Boolean`, `String`, or `Number` to its byte value.
+ *
+ * `byte()` converts a value to an integer (whole number) between -128 and
+ * 127. Values greater than 127 wrap around while negative values are
+ * unchanged. For example, 128 becomes -128 and -129 remains the same.
+ *
+ * The parameter, `n`, is the value to convert. If `n` is a Boolean, as in
+ * `byte(false)` or `byte(true)`, the number 0 (`false`) or 1 (`true`) will be
+ * returned. If `n` is a string or number, as in `byte('256')` or `byte(256)`,
+ * then the byte value will be returned. Decimal values are ignored. If an
+ * array is passed, as in `byte([true, 123, '456'])`, then an array of byte
+ * values will be returned.
+ *
+ * Note: If a value can't be converted to a number, as in `byte('giraffe')`,
+ * then the value `NaN` (not a number) will be returned.
  *
  * @method byte
- * @param {String|Boolean|Number}       n value to parse
- * @return {Number}                     byte representation of value
+ * @param {String|Boolean|Number} n value to convert.
+ * @return {Number} converted byte value.
  *
  * @example
- * <div class='norender'><code>
- * print(byte(127)); // 127
- * print(byte(128)); // -128
- * print(byte(23.4)); // 23
- * print(byte('23.4')); // 23
- * print(byte('hello')); // NaN
- * print(byte(true)); // 1
- * print(byte([0, 255, '100'])); // [0, -1, 100]
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a Boolean variable.
+ *   let original = true;
+ *
+ *   // Convert the Boolean to its byte value.
+ *   let converted = byte(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} : ${converted}`, 50, 50);
+ *
+ *   describe('The text "true : 1" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a string variable.
+ *   let original = '256';
+ *
+ *   // Convert the string to its byte value.
+ *   let converted = byte(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} : ${converted}`, 50, 50);
+ *
+ *   describe('The text "256 : 0" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a number variable.
+ *   let original = 256;
+ *
+ *   // Convert the number to its byte value.
+ *   let converted = byte(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} : ${converted}`, 50, 50);
+ *
+ *   describe('The text "256 : 0" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of values.
+ *   let original = [false, '64', 383];
+ *
+ *   // Convert the array elements to their byte values.
+ *   let converted = byte(original);
+ *
+ *   // Iterate over the converted array elements.
+ *   for (let i = 0; i < converted.length; i += 1) {
+ *
+ *     // Style the circle.
+ *     fill(converted[i]);
+ *
+ *     // Calculate the x-coordinate.
+ *     let x = (i + 1) * 25;
+ *
+ *     // Draw the circle.
+ *     circle(x, 50, 20);
+ *   }
+ *
+ *   describe(
+ *     'Three gray circles on a gray background. The circles get lighter from left to right.'
+ *   );
+ * }
+ * </code>
+ * </div>
  */
 /**
  * @method byte
- * @param {Array} ns                   values to parse
- * @return {Number[]}                  array of byte representation of values
+ * @param {Array} ns values to convert.
+ * @return {Number[]} converted byte values.
  */
 p5.prototype.byte = function(n) {
   const nn = p5.prototype.int(n, 10);
@@ -178,28 +610,113 @@ p5.prototype.byte = function(n) {
 };
 
 /**
- * Converts a number or string to its corresponding single-character
- * string representation. If a string parameter is provided, it is first
- * parsed as an integer and then translated into a single-character string.
- * When an array of number or string values is passed in, then an array of
- * single-character strings of the same length is returned.
+ * Converts a `Number` or `String` to a single-character `String`.
+ *
+ * `char()` converts numbers to their single-character string representations.
+ *
+ * The parameter, `n`, is the value to convert. If a number is passed, as in
+ * `char(65)`, the corresponding single-character string is returned. If a
+ * string is passed, as in `char('65')`, the string is converted to an integer
+ * (whole number) and the corresponding single-character string is returned.
+ * If an array is passed, as in `char([65, 66, 67])`, an array of
+ * single-character strings is returned.
+ *
+ * See <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/fromCharCode" target="_blank">MDN</a>
+ * for more information about conversions.
  *
  * @method char
- * @param {String|Number}       n value to parse
- * @return {String}             string representation of value
+ * @param {String|Number} n value to convert.
+ * @return {String} converted single-character string.
  *
  * @example
- * <div class='norender'><code>
- * print(char(65)); // "A"
- * print(char('65')); // "A"
- * print(char([65, 66, 67])); // [ "A", "B", "C" ]
- * print(join(char([65, 66, 67]), '')); // "ABC"
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a number variable.
+ *   let original = 65;
+ *
+ *   // Convert the number to a char.
+ *   let converted = char(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} : ${converted}`, 50, 50);
+ *
+ *   describe('The text "65 : A" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a string variable.
+ *   let original = '65';
+ *
+ *   // Convert the string to a char.
+ *   let converted = char(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} : ${converted}`, 50, 50);
+ *
+ *   describe('The text "65 : A" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of numbers.
+ *   let original = ['65', 66, '67'];
+ *
+ *   // Convert the string to a char.
+ *   let converted = char(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Iterate over elements of the converted array.
+ *   for (let i = 0; i < converted.length; i += 1) {
+ *
+ *     // Calculate the y-coordinate.
+ *     let y = (i + 1) * 25;
+ *
+ *     // Display the original and converted values.
+ *     text(`${original[i]} : ${converted[i]}`, 50, y);
+ *   }
+ *
+ *   describe(
+ *     'The text "65 : A", "66 : B", and "67 : C" written on three separate lines. The text is in black on a gray background.'
+ *   );
+ * }
+ * </code>
+ * </div>
  */
 /**
  * @method char
- * @param {Array} ns              values to parse
- * @return {String[]}             array of string representation of values
+ * @param {Array} ns values to convert.
+ * @return {String[]} converted single-character strings.
  */
 p5.prototype.char = function(n) {
   if (typeof n === 'number' && !isNaN(n)) {
@@ -212,25 +729,83 @@ p5.prototype.char = function(n) {
 };
 
 /**
- * Converts a single-character string to its corresponding integer
- * representation. When an array of single-character string values is passed
- * in, then an array of integers of the same length is returned.
+ * Converts a single-character `String` to a `Number`.
+ *
+ * `unchar()` converts single-character strings to their corresponding
+ * integer (whole number).
+ *
+ * The parameter, `n`, is the character to convert. For example,
+ * `unchar('A')`, returns the number 65. If an array is passed, as in
+ * `unchar(['A', 'B', 'C'])`, an array of integers is returned.
  *
  * @method unchar
- * @param {String} n     value to parse
- * @return {Number}      integer representation of value
+ * @param {String} n value to convert.
+ * @return {Number} converted number.
  *
  * @example
- * <div class='norender'><code>
- * print(unchar('A')); // 65
- * print(unchar(['A', 'B', 'C'])); // [ 65, 66, 67 ]
- * print(unchar(split('ABC', ''))); // [ 65, 66, 67 ]
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a string variable.
+ *   let original = 'A';
+ *
+ *   // Convert the string to a number.
+ *   let converted = unchar(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} : ${converted}`, 50, 50);
+ *
+ *   describe('The text "A : 65" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of characters.
+ *   let original = ['A', 'B', 'C'];
+ *
+ *   // Convert the string to a number.
+ *   let converted = unchar(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Iterate over elements of the converted array.
+ *   for (let i = 0; i < converted.length; i += 1) {
+ *
+ *     // Calculate the y-coordinate.
+ *     let y = (i + 1) * 25;
+ *
+ *     // Display the original and converted values.
+ *     text(`${original[i]} : ${converted[i]}`, 50, y);
+ *   }
+ *
+ *   describe(
+ *     'The text "A : 65", "B : 66", and "C :67" written on three separate lines. The text is in black on a gray background.'
+ *   );
+ * }
+ * </code>
+ * </div>
  */
 /**
  * @method unchar
- * @param {Array} ns       values to parse
- * @return {Number[]}      integer representation of values
+ * @param {String[]} ns values to convert.
+ * @return {Number[]} converted numbers.
  */
 p5.prototype.unchar = function(n) {
   if (typeof n === 'string' && n.length === 1) {
@@ -241,30 +816,118 @@ p5.prototype.unchar = function(n) {
 };
 
 /**
- * Converts a number to a string in its equivalent hexadecimal notation. If a
- * second parameter is passed, it is used to set the number of characters to
- * generate in the hexadecimal notation. When an array is passed in, an
- * array of strings in hexadecimal notation of the same length is returned.
+ * Converts a `Number` to a `String` with its hexadecimal value.
+ *
+ * `hex()` converts a number to a string with its hexadecimal number value.
+ * Hexadecimal (hex) numbers are base-16, which means there are 16 unique
+ * digits. Hex extends the numbers 0–9 with the letters A–F. For example, the
+ * number `11` (eleven) in base-10 is written as the letter `B` in hex.
+ *
+ * The first parameter, `n`, is the number to convert. For example, `hex(20)`,
+ * returns the string `'00000014'`. If an array is passed, as in
+ * `hex([1, 10, 100])`, an array of hexadecimal strings is returned.
+ *
+ * The second parameter, `digits`, is optional. If a number is passed, as in
+ * `hex(20, 2)`, it sets the number of hexadecimal digits to display. For
+ * example, calling `hex(20, 2)` returns the string `'14'`.
  *
  * @method hex
- * @param {Number} n     value to parse
- * @param {Number} [digits]
- * @return {String}      hexadecimal string representation of value
+ * @param {Number} n value to convert.
+ * @param {Number} [digits] number of digits to include.
+ * @return {String} converted hexadecimal value.
  *
  * @example
- * <div class='norender'><code>
- * print(hex(255)); // "000000FF"
- * print(hex(255, 6)); // "0000FF"
- * print(hex([0, 127, 255], 6)); // [ "000000", "00007F", "0000FF" ]
- * print(Infinity); // "FFFFFFFF"
- * print(-Infinity); // "00000000"
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a number variable.
+ *   let original = 20;
+ *
+ *   // Convert the number to a hex string.
+ *   let converted = hex(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(14);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} = ${converted}`, 50, 50);
+ *
+ *   describe('The text "20 = 00000014" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a number variable.
+ *   let original = 20;
+ *
+ *   // Convert the number to a hex string.
+ *   // Only display two hex digits.
+ *   let converted = hex(original, 2);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} = ${converted}`, 50, 50);
+ *
+ *   describe('The text "20 = 14" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of numbers.
+ *   let original = [1, 10, 100];
+ *
+ *   // Convert the numbers to hex strings.
+ *   // Only use two hex digits.
+ *   let converted = hex(original, 2);
+ *
+ *   // Style the text.
+ *   textAlign(RIGHT, CENTER);
+ *   textSize(16);
+ *
+ *   // Iterate over the converted values.
+ *   for (let i = 0; i < converted.length; i += 1) {
+ *
+ *     // Calculate the y-coordinate.
+ *     let y = (i + 1) * 25;
+ *
+ *     // Display the original and converted values.
+ *     text(`${ original[i]} = ${converted[i]}`, 75, y);
+ *   }
+ *
+ *   describe(
+ *     'The text "1 = 01", "10 = 0A", and "100 = 64" written on three separate lines. The text is in black on a gray background.'
+ *   );
+ * }
+ * </code>
+ * </div>
  */
 /**
  * @method hex
- * @param {Number[]} ns    array of values to parse
+ * @param {Number[]} ns values to convert.
  * @param {Number} [digits]
- * @return {String[]}      hexadecimal string representation of values
+ * @return {String[]} converted hexadecimal values.
  */
 p5.prototype.hex = function(n, digits) {
   digits = digits === undefined || digits === null ? (digits = 8) : digits;
@@ -291,25 +954,86 @@ p5.prototype.hex = function(n, digits) {
 };
 
 /**
- * Converts a string representation of a hexadecimal number to its equivalent
- * integer value. When an array of strings in hexadecimal notation is passed
- * in, an array of integers of the same length is returned.
+ * Converts a `String` with a hexadecimal value to a  `Number`.
+ *
+ * `unhex()` converts a string with its hexadecimal number value to a number.
+ * Hexadecimal (hex) numbers are base-16, which means there are 16 unique
+ * digits. Hex extends the numbers 0–9 with the letters A–F. For example, the
+ * number `11` (eleven) in base-10 is written as the letter `B` in hex.
+ *
+ * The first parameter, `n`, is the hex string to convert. For example,
+ * `unhex('FF')`, returns the number 255. If an array is passed, as in
+ * `unhex(['00', '80', 'FF'])`, an array of numbers is returned.
  *
  * @method unhex
- * @param {String} n value to parse
- * @return {Number}      integer representation of hexadecimal value
+ * @param {String} n value to convert.
+ * @return {Number} converted number.
  *
  * @example
- * <div class='norender'><code>
- * print(unhex('A')); // 10
- * print(unhex('FF')); // 255
- * print(unhex(['FF', 'AA', '00'])); // [ 255, 170, 0 ]
- * </code></div>
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create a a hex string variable
+ *   let original = 'FF';
+ *
+ *   // Convert the hex string to a number.
+ *   let converted = unhex(original);
+ *
+ *   // Style the text.
+ *   textAlign(CENTER, CENTER);
+ *   textSize(16);
+ *
+ *   // Display the original and converted values.
+ *   text(`${original} = ${converted}`, 50, 50);
+ *
+ *   describe('The text "FF = 255" written in black on a gray background.');
+ * }
+ * </code>
+ * </div>
+ *
+ * <div>
+ * <code>
+ * function setup() {
+ *   createCanvas(100, 100);
+ *
+ *   background(200);
+ *
+ *   // Create an array of numbers.
+ *   let original = ['00', '80', 'FF'];
+ *
+ *   // Convert the numbers to hex strings.
+ *   // Only use two hex digits.
+ *   let converted = unhex(original, 2);
+ *
+ *   // Style the text.
+ *   textAlign(RIGHT, CENTER);
+ *   textSize(16);
+ *
+ *   // Iterate over the converted values.
+ *   for (let i = 0; i < converted.length; i += 1) {
+ *
+ *     // Calculate the y-coordinate.
+ *     let y = (i + 1) * 25;
+ *
+ *     // Display the original and converted values.
+ *     text(`${ original[i]} = ${converted[i]}`, 80, y);
+ *   }
+ *
+ *   describe(
+ *     'The text "00 = 0", "80 = 128", and "FF = 255" written on three separate lines. The text is in black on a gray background.'
+ *   );
+ * }
+ * </code>
+ * </div>
  */
 /**
  * @method unhex
- * @param {Array} ns values to parse
- * @return {Number[]}      integer representations of hexadecimal value
+ * @param {String[]} ns values to convert.
+ * @return {Number[]} converted numbers.
  */
 p5.prototype.unhex = function(n) {
   if (n instanceof Array) {