Illustrates the importance of the mandatory Final Approach Fix check.
There are 2 false. 6 degs and 1.5 degs. 6 degs g/s is used at London city for example and is quiet steep. The high ROD must catch someone's attention.
The localiser also has 2 false LOC. Both at 45 Degs either side of centre line. Cames in quiet handy doing circuit work. Crossing the False Loc, gives one an idea when to commence the base turn.
If memory serves me correctly.