A functional document, also known as functional specification, is a document that specifies the function that a system must perform, mostly regarded in systems engineering and software development. It typically describes what the system needs by the user, including the requested properties of inputs and outputs. It is somewhat similar to a matching requirements document.
Answer:
Literally, it means that it is snowing.
Metaphorically, it could mean that something delicate looking yet sturdy has been moved and positions in a situation have changed.
Are less important to the overall plot
