kernel density with shading area

[peter peter]

I want to draw a shaded area (akin to the NBER vertical bars) in a kdensity command. For example, in the below example I want to draw a shaded area between 200 and 240. Any help appreciated.

sysuse auto
kdensity length

[Maarten Buis]

Nick Cox wrote an article on how to do such a thing in the Stata Journal. Here is the link: https://www.stata-journal.com/articl...article=gr0067