The term 'Hem Holder' is a job title for someone who uses pins to hold fabric in place while sewing. This job requires the use of a PIN, which is a three-letter word. The person in this role must be able to accurately and securely place pins in fabric to ensure that it stays in place while being sewn. They must also be able to remove the pins without damaging the fabric. This job requires a steady hand and attention to detail.