@opensdh, any thoughts (or prayers)?

It means "that is D or is reachable from D".

@CaseyCarter @opensdh At the first glance of this sentence, it's hard to read. Fortunately, [temp.over.link.example] p3 has great help to understand the meaning.

template <class T> decltype(g(T())) h();
int g(int);
template <class T> decltype(g(T())) h()         // redeclaration of h() uses the earlier lookup…
  { return g(T()); }                            // … although the lookup here does find g(int)
int i = h<int>();                               // template argument substitution fails; g(int)
                                                // not considered at the first declaration of h()

Would anyone object to changing this sentence to:

 A name that appears in a declaration $D$ of a template $T$ is looked up from where it appears in an unspecified
 declaration of $T$ that is
+either $D$ itself
 or is reachable from $D$ and from which no other declaration of $T$ that contains the usage
 of the name is reachable.

which I think preserves the intended meaning but would have been easier for me to decode?

Give a man a clarification and he reads for a day. Teach a man to parse arbitrary grammatical English sentences and he reads for a lifetime.

(Other than that, no.)

Give a man a clarification and he reads for a day. Teach a man to parse arbitrary grammatical English sentences and he reads for a lifetime.

What about women?

The received wisdom addresses only the adult male case. I suspect women are also capable of eating and catching fish, but since I was stretching the saying already by applying it to reading, I didn't want to press my luck by assuming.