The Book of Concord is an interesting puzzle in that it is a composite of several works, some of which also appear independently:
So how do I find all instances or all references to the Book of Concord i.e. the equivalent of running <Gen-Rev> on the Bible?
1. First, generate a search from the first paragraph of the Book of Concord (Preface):
2. Next generate a Search on the last paragraph of the Book of Concord (from Formula of Concord).
3. Now combine the two Searches using the hyphen for the range operator and converting the = to ~. This gives me all references to the Book of Concord.
4. Now wrap the Search in the {Milestone <reference>} syntax. This gives you all instances of the Book of Concord or portions thereof. (Don't take this too seriously regarding the Three Ecumenical Creeds which occur outside the Lutheran context). This is a complete list of everything that could appear in the Context Menu, Parallel Resources, Preview Popup depending upon your location in the Book of Concord.
Orthodox Bishop Hilarion Alfeyev: "To be a theologian means to have experience of a personal encounter with God through prayer and worship."