I know one can right-click these lines and select “Hide,” but that will be useless as I often hide and unhide objects in my model. What is the best way to more permanently hide these types of lines (or anything else, I suppose), in such a way that they won’t be affected by the “Unhide All” command every ten minutes?
You might want to look at your workflow, using the hide function can get very confusing as it only works in the current context. Using tags for hiding things is much more versatile and you run less risk of losing things. Hidden things can be easily deleted by mistake.
Thanks for your thoughts. Could one tag all the lines of the type I indicated in my screenshot and just hide and unhide everything with that tag at will? That could well be a solution to what I’m looking for, although everything suggested by other users would seem to work in their own ways as well.