I hesitate to ask, because the term must be explained somewhere. I have found out it means facing point lock, and I can see we don't want trains running against a facing point that is set the wrong way.
However, that is about all I have fathomed. Can anyone tell me more like for instance:
- How do we know it is implemented?
Can we see anything?
To remove it I assume the action is to move the points to the right direction.
What can we add to help a beginner? I am working on a NSW layout, so what they would do in NSW is what I am especially interested in.