one of the documented procedures in this installation of the ACS
ad_general_links_summary   db   on_what_id   on_which_table   item
What it does:
Generates the line item list of links made on this item.
Defined in: /web/philip/tcl/ad-general-links.tcl

Source code:

    set user_id [ad_get_user_id]

    set approved_clause "and slm.approved_p = 't' and gl.approved_p = 't'"

    set return_url [ns_conn url]?[export_ns_set_vars "url"]

    set selection [ns_db select $db "select gl.link_id, gl.url, link_title, link_description, slm.map_id, slm.creation_time, first_names || ' ' || last_name as linker_name, u.user_id as link_user_id
    from general_links gl, site_wide_link_map slm, users u
    where gl.link_id = slm.link_id 
    and on_what_id = $on_what_id
    and on_which_table = '[DoubleApos $on_which_table]' $approved_clause
    and slm.user_id = u.user_id"]

    append return_string "<ul>"
    while {[ns_db getrow $db $selection]} {

	if {[ad_parameter ClickthroughP general-links] == 1} {
	    set exact_link "/ct/ad_link_${link_id}?send_to=$url"
	} else {
	    set exact_link "$url"

	append return_string "<li><a href=/general-links/one-link?[export_url_vars return_url link_id item]><a href=\"$exact_link\">$link_title</a> ($creation_time)</a> by <a href=\"/shared/community-member?user_id=$link_user_id\">$linker_name</a>"

    append return_string "</ul>"