And also
@iain666
Ok, I see, and yes, that is true, they allowed leeway in the tuning in as much as you are able to zoom / scan when not precisely tuned, in the same way that the chevrons show even if you are not precisely tuned.
However, to say that adds uncertainty is putting the cart ahead of the horse.

If you are looking for a specific body type, then the seconds it takes to confirm definitively that it is what you think / hope should come before you try to scan it, IMHO obviously.

Many a time I dropped into a system, saw a signal that might have been an ELW, ran my tuner over it, and yes... Eureka! But I quickly learnt to check that I was centered, and quickly learned that if I wasn't, was even a tiny, tiny bit out, then I was actually looking at a RIW, and the text changed to tell me that. And that was before I zoomed in.