one of the documented procedures in this installation of the ACS
ad_removal_blurb   { subsection "" }   { filetype "txt" }
What it does:
Gets the standard site-wide or subsection-specific removal blurb, for attaching to outgoing email. txt=plain, htm=html mail, aol = aol mail
Defined in: /web/philip/tcl/spam-defs.tcl

Source code:

#    return [ad_removal_blurb_internal $subsection $filetype]
# Memoize will fail miserably if subsection is an empty string (or filetype, for that matter)
# unless we do this nasty Tcl magic. -- hqm
    return [util_memoize "ad_removal_blurb_internal {$subsection} {$filetype}"]