diff --git a/index.d.ts b/index.d.ts
index a68251a..7c46621 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -16,13 +16,93 @@ Callback function to determine if a flag is required during runtime.
 export type IsRequiredPredicate = (flags: Readonly<AnyFlags>, input: readonly string[]) => boolean;
 
 export type Flag<PrimitiveType extends FlagType, Type, IsMultiple = false> = {
+	/**
+	Type of value. (Possible values: `string` `boolean` `number`)
+	*/
 	readonly type?: PrimitiveType;
-	readonly shortFlag?: string;
+
+	/**
+	Limit valid values to a predefined set of choices.
+
+	@example
+	```
+	unicorn: {
+		isMultiple: true,
+		choices: ['rainbow', 'cat', 'unicorn']
+	}
+	```
+	*/
+	readonly choices?: Type extends unknown[] ? Type : Type[];
+
+	/**
+	Default value when the flag is not specified.
+
+	@example
+	```
+	unicorn: {
+		type: 'boolean',
+		default: true
+	}
+	```
+	*/
 	readonly default?: Type;
-	readonly isRequired?: boolean | IsRequiredPredicate;
-	readonly isMultiple?: IsMultiple;
+
+	/**
+	A short flag alias.
+
+	@example
+	```
+	unicorn: {
+		shortFlag: 'u'
+	}
+	```
+	*/
+	readonly shortFlag?: string;
+
+	/**
+	Other names for the flag.
+
+	@example
+	```
+	unicorn: {
+		aliases: ['unicorns', 'uni']
+	}
+	```
+	*/
 	readonly aliases?: string[];
-	readonly choices?: Type extends unknown[] ? Type : Type[];
+
+	/**
+	Indicates a flag can be set multiple times. Values are turned into an array.
+
+	Multiple values are provided by specifying the flag multiple times, for example, `$ foo -u rainbow -u cat`. Space- or comma-separated values [currently *not* supported](https://github.com/sindresorhus/meow/issues/164).
+
+	@default false
+	*/
+	readonly isMultiple?: IsMultiple;
+
+	/**
+	Determine if the flag is required.
+
+	If it's only known at runtime whether the flag is required or not you can pass a Function instead of a boolean, which based on the given flags and other non-flag arguments should decide if the flag is required.
+
+	- The first argument is the **flags** object, which contains the flags converted to camel-case excluding aliases.
+	- The second argument is the **input** string array, which contains the non-flag arguments.
+	- The function should return a `boolean`, true if the flag is required, otherwise false.
+
+	@default false
+
+	@example
+	```
+	isRequired: (flags, input) => {
+		if (flags.otherFlag) {
+			return true;
+		}
+
+		return false;
+	}
+	```
+	*/
+	readonly isRequired?: boolean | IsRequiredPredicate;
 };
 
 type StringFlag = Flag<'string', string> | Flag<'string', string[], true>;
@@ -43,14 +123,17 @@ export type Options<Flags extends AnyFlags> = {
 	The key is the flag name in camel-case and the value is an object with any of:
 
 	- `type`: Type of value. (Possible values: `string` `boolean` `number`)
-	- `shortFlag`: A short flag alias.
+	- `choices`: Limit valid values to a predefined set of choices.
 	- `default`: Default value when the flag is not specified.
-	- `isRequired`: Determine if the flag is required.
-		If it's only known at runtime whether the flag is required or not you can pass a Function instead of a boolean, which based on the given flags and other non-flag arguments should decide if the flag is required.
-	- `isMultiple`: Indicates a flag can be set multiple times. Values are turned into an array. (Default: false)
-		Multiple values are provided by specifying the flag multiple times, for example, `$ foo -u rainbow -u cat`. Space- or comma-separated values are *not* supported.
+	- `shortFlag`: A short flag alias.
 	- `aliases`: Other names for the flag.
-	- `choices`: Limit valid values to a predefined set of choices.
+	- `isMultiple`: Indicates a flag can be set multiple times. Values are turned into an array. (Default: false)
+		- Multiple values are provided by specifying the flag multiple times, for example, `$ foo -u rainbow -u cat`. Space- or comma-separated values [currently *not* supported](https://github.com/sindresorhus/meow/issues/164).
+	- `isRequired`: Determine if the flag is required. (Default: false)
+		- If it's only known at runtime whether the flag is required or not, you can pass a `Function` instead of a `boolean`, which based on the given flags and other non-flag arguments, should decide if the flag is required. Two arguments are passed to the function:
+		- The first argument is the **flags** object, which contains the flags converted to camel-case excluding aliases.
+		- The second argument is the **input** string array, which contains the non-flag arguments.
+		- The function should return a `boolean`, true if the flag is required, otherwise false.
 
 	Note that flags are always defined using a camel-case key (`myKey`), but will match arguments in kebab-case (`--my-key`).
 
@@ -59,18 +142,18 @@ export type Options<Flags extends AnyFlags> = {
 	flags: {
 		unicorn: {
 			type: 'string',
-			shortFlag: 'u',
+			choices: ['rainbow', 'cat', 'unicorn'],
 			default: ['rainbow', 'cat'],
+			shortFlag: 'u',
+			aliases: ['unicorns']
 			isMultiple: true,
-			choices: ['rainbow', 'cat', 'unicorn'],
 			isRequired: (flags, input) => {
 				if (flags.otherFlag) {
 					return true;
 				}
 
 				return false;
-			},
-			aliases: ['unicorns']
+			}
 		}
 	}
 	```
diff --git a/readme.md b/readme.md
index b24cc51..a3251d0 100644
--- a/readme.md
+++ b/readme.md
@@ -103,17 +103,17 @@ Define argument flags.
 The key is the flag name in camel-case and the value is an object with any of:
 
 - `type`: Type of value. (Possible values: `string` `boolean` `number`)
-- `shortFlag`: A short flag alias.
+- `choices`: Limit valid values to a predefined set of choices.
 - `default`: Default value when the flag is not specified.
+- `shortFlag`: A short flag alias.
+- `aliases`: Other names for the flag.
+- `isMultiple`: Indicates a flag can be set multiple times. Values are turned into an array. (Default: false)
+	- Multiple values are provided by specifying the flag multiple times, for example, `$ foo -u rainbow -u cat`. Space- or comma-separated values are [currently *not* supported](https://github.com/sindresorhus/meow/issues/164).
 - `isRequired`: Determine if the flag is required. (Default: false)
 	- If it's only known at runtime whether the flag is required or not, you can pass a `Function` instead of a `boolean`, which based on the given flags and other non-flag arguments, should decide if the flag is required. Two arguments are passed to the function:
 	- The first argument is the **flags** object, which contains the flags converted to camel-case excluding aliases.
 	- The second argument is the **input** string array, which contains the non-flag arguments.
 	- The function should return a `boolean`, true if the flag is required, otherwise false.
-- `isMultiple`: Indicates a flag can be set multiple times. Values are turned into an array. (Default: false)
-	- Multiple values are provided by specifying the flag multiple times, for example, `$ foo -u rainbow -u cat`. Space- or comma-separated values are [currently *not* supported](https://github.com/sindresorhus/meow/issues/164).
-- `aliases`: Other names for the flag.
-- `choices`: Limit valid values to a predefined set of choices.
 
 Note that flags are always defined using a camel-case key (`myKey`), but will match arguments in kebab-case (`--my-key`).
 
@@ -123,18 +123,18 @@ Example:
 flags: {
 	unicorn: {
 		type: 'string',
-		shortFlag: 'u',
+		choices: ['rainbow', 'cat', 'unicorn'],
 		default: ['rainbow', 'cat'],
+		shortFlag: 'u',
+		aliases: ['unicorns'],
 		isMultiple: true,
-		choices: ['rainbow', 'cat', 'unicorn'],
 		isRequired: (flags, input) => {
 			if (flags.otherFlag) {
 				return true;
 			}
 
 			return false;
-		},
-		aliases: ['unicorns']
+		}
 	}
 }
 ```