They mean like this, where `-` is tab and `.` is space:

    --def myfunc(
    ---foobar = 1,
    ---...baz = 2
    --)

(silly example, idk, you get what i mean)

No matter what size tab stops you use, the `=` will always line up vertically, because the tabs are only used for the indentation (nesting level), not the visual alignment.