What exactly is a JFRV?

Not only OP got confused. There are tons of threads where people confuse this.

In this threat alloverthefloor seems to believe his ARC with the purpose of joining family is a “JFRV”, as opposed to the ARC he now has to change his JFRV into. The thread is even titled “Changing my JFRV to ARC”.

Another thread, another confusion:

In another thread, tomthorne mixes things up completely:

There should be a clear and strictly enforced mod policy on this as well a concise and clear primer outlining the specific terms at the top of the Visa & Residency forum.

It is exhausting to reply to questions and explain procedures and steps to people, when suddenly some other Forumosan enters the thread and posts something utterly wrong and confusing.

How should people navigate the complexities of ROC immigration law and policy, when Forumosa is full of unmoderated half-truths and inaccuracies?