The term 'stain-removal cycle' refers to a process of removing stains from fabrics. The first step in this process is the presoak, which involves soaking the fabric in a solution that helps to loosen the stain. This solution can be a detergent, enzyme, or other cleaning agent. After the presoak, the fabric is then washed and rinsed, and any remaining stains are treated with a spot remover. Finally, the fabric is dried and ready for use.