Learn how to read the symbols on a crochet diagram and understand the pattern with Steel and Stitch The patterns and symbols on a crochet diagram can be intimidating to the beginner. However, they are much simpler than they appear. In this tutorial, Emma Friedlander-Collins, also known as Steel and Stitch (@steelandstitch), teaches us how to decipher a crochet diagram, reveals what each abbreviation and symbol means, and tells you how you can use this useful tool in your next design.