1.1 This terminology covers terms related to ring, rotor, and air jet yarn spinning systems. 1.1.1 This standard formerly only included terminology related to open-end spinning. It has been expanded to include terms relating to ring and air jet spinning systems. 1.1.2 While the term rotor spinning is technically correct, the terms rotor and open-end are used interchangeably in the textile industry. 1.2 T