I remember this from a discussion many years ago, but apparently we never posted a wish. I often need this ability and the solution is either to mask off the unwanted info or unlink the section and delete the line work. I prefer to not unlink sections, and now with PBCs in 17 there is little need to do so.
To clarify if my reasoning isn't readily apparent, there is often info in a portion of a building section--viewed through a cased opening, for instance--that isn't relevant, but the rear wall of another room is well behind that location and is relevant.
Dave Jochum
J o c h u m A R C H I T E C T S http://www.jochumarchitects.comMBP 16" (M1 Max) 64 GB•OS 13.5.2•AC 27 Silicon (latest build)