do SignalTap modules have to be instantiated at the top level of a design

Many responses, but no answer. The last response doesn't seem to have anything to so with the original question: "do SignalTap modules have to be instantiated at the top level of a design?"

I have instantiated a SignalTap-II module, verified that it is consuming resources, and it shows it in the hierarchy viewer.

I have gotten past the "Invalid SOF" and "JTAG Communication Error" messages - there was a question there that never got answered.

And the SignalTap-II analyzer still can't find it. It will let me add a second one, and connect to the signals that were going into the first one (what signals weren't optimized away), but it will not let me look at an RTL-Instantiated SignalTap.

I want to be able to instantiate a SignalTap and actually use it. How does one do that? (I viewed the tutorial and the only mention of instantiating a SignalTap in RTL was: "It can be done, but we are not going to show you how".)