CAPI:display-message-for-pane

Hi all, 

I'm looking at capi:display-message and capi:display-message-for-pane.
On the Mac, when display-message is called, it generally displays the message
in (what I think is called) a `sheet' that comes down from the
titlebar, essentially
enforcing modality with display-message, but only blocking the given window.

However, using display-message, I can't be sure from which window the
message will
come down. Using apply-in-pane-process and execute-with-interface also don't 
seem to enforce it either. 

With display-message-for-pane I get the behavior I'm looking for, but the docs
only say:

The function display-message-for-pane  displays a message on the same
screen as a specified pane.

Is it the case that, on the Mac, it will also come from the interface
which contains
the pane?

Thanks in advance!

-- 
=====================
Joshua Taylor
tayloj@rpi.edu