Hello,
There is PlotHighlighting option in Plot in Mathematica 13.3 and it can be found in local documentation:
![enter image description here](https://community.wolfram.com//c/portal/getImageAttachment?filename=Screenshot2023-07-02203552.png&userId=2471588)
However, when this option is input, there is an error:
Plot::optx: Unknown option PlotHighlighting->Placed[Dropline,6] in Plot[{Sin[x]+x/2,Sin[x]+x},{x,0,10},Filling->{1->{2}},PlotHighlighting->Placed[Dropline,6]].
The original code is:
Plot[{Sin[x] + x/2, Sin[x] + x}, {x, 0, 10}, Filling -> {1 -> {2}},
PlotHighlighting -> Placed["Dropline", 6]]
What causes the option of PlotHighlighting not working?
Thanks.