one of the documented procedures in this installation of the ACS
mv_parameter   name   { default "" }
What it does:
The correct way to get a parameter for the member value module. We want to make sure that we are abstracting away whether this is stored in the database or in the /parameters/ad.ini file.
Defined in: /web/philip/tcl/ad-member-value.tcl

Source code:

    set server_name [ns_info server]
    append config_path "ns/server/" $server_name "/acs/member-value"
    set config_value [ns_config $config_path $name]
    if ![empty_string_p $config_value] {
	return $config_value
    } else {
	return $default