I would tend to agree with, 1ke. I would assume it is for Christ the King, but would need to see it in context.
As for where Mass takes place? Well… there are actually two parts of the room (or at least should be). The nave, where the pews are, and the sanctuary, where the altar is. In older churches it is easy to identify the nave from the sanctuary by the communion or altar rails. In their absence, I consider the sanctuary to start at the first of the three steps leading up to the area with the altar. That of course assumes that there are steps, but the vast majority of Catholic churches I’ve been in are setup that way.
I only mention the above since it’s important to remember that the sanctuary is a sacred place set apart from the nave. It was once described to me as the nave is the secular or earthly and the sanctuary is the sacred or heavenly. Too often I see people cut through the sanctuary to get to the other side of the nave instead of walking around. In general my feeling is no one should be in the sanctuary without a good reason to be there.
(aren’t you glad you got a bonus answers for a single question?

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