This seems like a cumbersome distinction between const and var, and `let. Couldn't it just be something like this?

"variables declared either implicitly, or using the const, let, or var keywords are declared at the global scope."

Especially since the phrase is immediately preceded by "Unless otherwise scoped within blocks or functions".

@lance But it is exactly this remark — "Unless otherwise scoped within blocks or functions" — that prevents placing const, var, and let in the same list: var is not block scoped. Maybe you or somebody else could propose the whole clear concise sentence there? I am not a native speaker, so I am a bit clumsy there.

var is not block scoped

The const and let declarations are block scoped, and the var declaration is function scoped. I think this sentence covers both. I'm not sure if I have a wording that is clearer.

Unless otherwise scoped within blocks or functions, variables declared either implicitly, or using the const, let, or var keywords are declared at the global scope.

Thank you. Done.