This is about editing my answer prove that the intersection of these spheres is a circle and possible fixes.
Sometimes I put long outputs in answers. This is not popular, and does earn me downvotes, but sometimes it is the way to improve an answer.
Over the years, as today, I have deleted such long bits of computer output, in favor of an improved output (usually). Today, the deleting button just got slower and slower and slower. I clicked on "Hide Preview," that did not really speed things up.
What I would really like is the ability to outline a large number of lines with the mouse and then use a single click to delete. I generally use the Firefox window for MSE. This is my home desktop, a Unix machine.
I also use a Chrome window but don't usually open MSE on it
