CMakePresets.json feature newly added in CMake 3.19 takes up a substantial amount of space early in the page for the
cmake(1) documentation. It should have its own section within that page and I would suggest it should come after the generic
Options section, not before it as it does now. This would seem a more logical flow and less overwhelming to a new user.
As an aside, the
Synopsis seems to miss a lot of the structure of that page. It might be worth looking at whether it should turn into or be augmented by a HTML table of contents like some other documentation pages provide. Navigation could be substantially improved as a result.