In this video, you'll learn about the call function on the SWF embroidery machine control panel. The call function is used to recall designs and patterns saved in the machine's memory. This feature allows you to quickly access designs you've worked on previously, without having to load the design from an external device. This tutorial will guide you through the steps of using the call function, including how to select a design, adjust the size, and start stitching. This feature is a useful tool for saving time and streamlining your embroidery process.