Histogram Confusion?

Is the meaning of “scooch” something like “squeeze”? Would squeezing the scale mean that the ends points went out of view?

According to both GIMP and RT there is very little clipping in this image. RT puts a value on it which in this case is less than .02%. I’m thinking that clipping would have the affect of allowing pixels that should not be the same ending up in the same position on either the extreme left or right end the histogram. Could also be both ends.

When it comes to useful information knowing about such spikes on either end would seem to me to be much more important than anything you might learn about the sparsely distributed other pixels. That might mean show the spikes no matter what that does to the rest of the histogram.