Wikipedia
Flexline
Flexline scheduling is a set of principles for creating agile and dynamic scheduling timelines. The term is coined in opposition of a more traditional schedule with a 'deadline'. This scheduling method is characterized, by a constantly adjusted finish date, as required by the requirements, obstacles, and customers needs. There are variations of the flexline scheduling methodology such as: intermediate modulus flexline, the Poisson flexline, and the ductile flexline.