TAR’s reading club looked at this document recently, and several of us found the following a bit unclear:

https://github.com/mongodb/mongo/blob/master/src/mongo/db/repl/README.md#step-down

• What exactly does “force” do? What happens if it’s false?
• Where does `waitUntil` come from?

It might also help to link to the manual’s replSetStepDown discussion: https://www.mongodb.com/docs/manual/reference/command/replSetStepDown

cc @vishnu