I'm positive the code came from an aD client site, and was incompletely moved over to the toolkit release, simply because the code's old enough that it dates from the days when toolkit work was completely driven by client needs...
Another example is the geocentric bboard code, which was done for the pollution-tracking site Philip and others did about three (?) years ago. The code requires table contents and Tcl pages that aren't provided, and has never worked in any ACS Classic release. Knowing that, I didn't even bother rewriting the outer joins when I ported bboard over to Postgres...
