Although procedural law is intertwined with law's very structure, there is still a constant tendency to dismiss it as being merely adjective law, a technical issue. To correct this misapprehension, the present volume evaluates which research questions can be - and are - pursued in procedural law study. Beyond doctrinal questions, juridical procedural law theory can put norms into empirical and other contexts and so function as a discipline of outside reflection and discipline-relay. The book explores this theoretical perspective, casting a new light on familiar as well as introducing innovative.