diff --git a/README.md b/README.md
index 760d22d..d832d7d 100644
--- a/README.md
+++ b/README.md
@@ -1,21 +1,22 @@
-# Naevner.js — color descriptions from hex codes
+# Naevner.js
+ ## Color descriptions generated from hex color codes
  Javascript plugin that provides natural language descriptions of hex color codes.
  
- # Why we made this
+ ## Why we made this
  We made this to have screenreader support for reading out color names on [remembertostand.com](https://remembertostand.com/) (Turn on screenreader and press C when on the site to hear it in action)
  
- # Credits
+ ## Credits
  * The hexToRGB and RGBToHSL functions used as part of this plugin are from https://css-tricks.com/converting-color-spaces-in-javascript/
  
- # Demo
+ ## Demo
  * Interactive demo of Naevner.js: [Nævner (naevner.com)](https://naevner.com/)
  * Naevner.js in use on a website — interactive demo: [Naevner.js in use on remembertostand.com](https://remembertostand.com/)
  * Naevner.js in use on a website — video demonstration of screenreader usage: [Naevner.js screenreader demo video](https://youtu.be/8kn6D_BuHYg)
  
- # Getting started
+ ## Getting started
  Include the [minified code](https://github.com/samhaeng/naevner/blob/main/naevner-min.js)
  
- # How to use
+ ## How to use
  ```javascript
  naevner(color);
  // Color input should be a string containing a
@@ -23,7 +24,7 @@
  // or without a preceding #-sign.
  ```
  
- # Examples
+ ## Examples
  ```javascript
  //Examples:
  naevner("#000000"); //Returns: “black”
@@ -32,11 +33,26 @@
  naevner("#2F5651"); //Returns: “dark, faded turquoise”
  naevner("#3F0548"); //Returns: “dark, clear, purpleish magenta”
  ```
- # Accepted values
+ ## Accepted values
  * 3-digit hex with preceding #-sign — e.g. `#f00`
  * 3-digit hex without preceding #-sign — e.g. `f00`
  * 6-digit hex with preceding #-sign — e.g. `#ff0000`
  * 6-digit hex without preceding #-sign — e.g. `ff0000`
 
- # Questions or advice
+ ## Parameters
+  ### approximationSuffix
+  
+  Ending for approximate colors — e.g. “greenish yellow” or “redish orange". Note that “off-white” and “black” nuances currently always use the term “-tinted” (e.g. “red-tinted black” or “yellow-tinted off-white”) independent of this parameter.
+  ```javascript
+  naevner(color, approximationSuffix);
+  ```
+
+  Examples:
+  ```javascript
+  // naevner("#3F0548");            //Returns: “dark, clear, purple**ish** magenta”
+  // naevner("#3F0548", "-tinted"); //Returns: “dark, clear, purple**-tinted** magenta”
+  // naevner("#3F0548", "-like");   //Returns: “dark, clear, purple**-like** magenta”
+  ```
+
+ # Questions, ideas and advice
  If you have questions or advice, feel free to open an issue on this repo. Thank you!