--- title: How patterns work --- This short guide will illustrate and explain how patterns work in FreeSewing. Not to be confused with how sewing pattern work — although there's [great books about that](https://www.assembil.com/how-patterns-work-book/) if you're interested — it's about what goes on under the hood each time a sewing pattern is generated by FreeSewing. This illustration is a good starting point to gain a better understanding of the structure of a FreeSewing pattern: A schematic overview of FreeSewing If we look at our image, it can be divided into three areas: - The left area with the **settings** box - The middle area with the **Pattern** box and everything in it - The right area with the **draft** box and the _SVG_ and _React_ logos Let's take a closer look at everything that is contained within our central **Pattern** box: The left and right parts are all about how to integrate FreeSewing in your _frontend_. In other words, how you'll plug it into your website, or online store, or a mobile application. That part is outside the scope of this guide.