Summarize this article in one sentence.
A single fold hem that has a zigzagged edge and is good for almost all types of fabrics. The hem is edge finished with a zigzag stitch, turned up, pressed and sewn with a catch stitch or a blind hemming stitch. This type of hem reduces bulk and works with most fabrics.
Single fold hem. You could also serge the edge finish instead of the zigzag stitch.