interactive: as little as it can

[MayaGans]

https://github.com/software-tools-in-javascript/js4ds/blob/6c9fdc7f3f093a14c73f63c38e56cd88fe5cc6fe/interactive.tex#L117

Rather than say 'as little as it can' what is happening here ?

"While it may look as though the paragraph, button, and current count are all being redrawn each time, React will only actually redraw ______________." Can we say what this is more concretely? Is it the character for how many times the button has been pressed?