Here I have a path with all the points being smooth (all handles are at 180°), but one portion of the path is particularly bumpy. I want to smooth only this portion.
I select it (using Lasso), I make sure these are smooth, I pick Pencil, hold Opt/Alt, drag the slider... and it makes the selected portion of the path connected to the rest of it in the sharp manner. There is no tension at the star/end points, it just flops.
While this can be useful, being blind like this, I’d love for it to at least give me the choice. An option, perhaps?