We consistently have [range.foo.bar] for subclauses. @zygoloid, do you want them renamed to [ranges.foo.bar] as well?

Use your judgment for the subclause labels. [range.general] should be renamed, but [range.access], [range.primitives], etc seem fine as-is to me. Maybe [range.range] should be [ranges.range].

Thanks. Most labels look reasonable, but there are some very long ones that I'd like to shorten. E.g. "iterator" -> "iter" and "operations" -> "op"