A Practice Note providing an overview of pipeline transportation agreements for hydrocarbon gas liquids, including natural gas liquids (NGLs). This Note discusses key legal and commercial issues, including service types, fees and charges, title and custody, indemnification, limitation of liability, force majeure, and termination. It explains important operational matters and technical concepts such as quality specifications, nominations and scheduling, and curtailment. This Note also includes useful drafting and negotiating tips for shippers and pipeline companies.