Difference Between a Specification and a Requirement

From http://programmers.stackexchange.com/questions/121289/what-is-the-difference-between-requirements-and-specifications:

"The sound-bite answer is that requirements are what your program should do, the specifications are how you plan to do it."

For OSE purposes, development begins with a Requirement. The author may make specifications on top of a requirement. Whatever is not specified shall be completed by the person doing the implementation.