Sparklines were introduced in release 7.4 https://tomazvajngerl.blogspot.com/2022/03/sparklines-in-calc.html code pointrers https://gerrit.libreoffice.org/q/owner:quikee%2540gmail.com+sparklines+branch:master
Created attachment 180454 [details] The Sparkline help page Here is my suggestion about the Sparkline Help page
Created attachment 180455 [details] The Sparklines help page (I used the Doc-team template here)
Olivier Hallot committed a patch related to this issue. It has been pushed to "master": https://git.libreoffice.org/help/commit/396d82a4d705d7b473f767816f970bffec74d33e tdf#148817 Sparklines Help page.