The is one of the many features supported by Racket's Scribble, which is used to generate the online and print books for the Racket ecosystem. https://docs.racket-lang.org/scribble/ (Which I also used for API docs embedded inline in the code of various Racket packages I wrote.)
For example, when you're showing a before and after, and want to highlight what changed. For example, I use it in the docs for: https://www.neilvandyke.org/racket/progedit/
The is one of the many features supported by Racket's Scribble, which is used to generate the online and print books for the Racket ecosystem. https://docs.racket-lang.org/scribble/ (Which I also used for API docs embedded inline in the code of various Racket packages I wrote.)