Difference between "changed" and "dirs-changed" in svnlook?

I'm hacking on the commit-access-control.pl ACL script to try and
provide a slightly finer grain of control (does anyone know when ACLs
will be implemented in the subversion, btw?), and I noticed the program
does an "svnlook dirs-changed" before it does an "svnlook changed".

What I want to know is this: Is there any information in the
"dirs-changed" output that doesn't show up in the "changed" output? As
near as I can tell from a little playing around, there isn't. I can get
all the changed information by just doing an "svnlook changed".

Am I right here? Thanks in advance.

PS: And if I am right, does anyone know why the example code does both?

-- 
Jason M. Sullivan
Optimal Technologies (US), Inc.
ASIC Design Engineer
[t] 919.459.3607
[f] 919.334.6519
jasons_at_otii.com <mailto:jasons_at_otii.com>
http://www.otii.com <http://www.otii.com/>
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