It seems to be working for me(homepages are working, and i tried testing that call specifically). Not sure if it was hacked in by aD or was part of aolserver.
I just did some grepp'ing to see if it was proc'ed in one of the tcl files, and it doesn't look like it.
Though, it seems that the sdm makes use of it.
motif1:~# /web/aolserver/3rc1/bin/nsd -V
AOLserver version 3.0rc1
Platform: linux
Built: Mar 20 2000 at 17:35:59
Tcl version 7.6
Thread library: pthread
