Our solution is a helper MDL app. whose sole purpose is to show a list of config.variables. We pop this dialog from the real app's Help menu. The list of variables is stored as a StringList in the app's message resource file. We don't provide an explanation, but clearly it would be simple to do so.
StringList STRLIST_CfgVars =
{
2, /* N info fields */
{
{{ 0, 1}, TXT_FlexiTable },
{{ 0, 1}, CFGVAR_FLEXITABLE_DATA },
{{ 0, 1}, TXT_Unknown },
....
{{ 0, 17}, TXT_MicroStation },
{{ 0, 17}, CFGVAR_USTN_LICENSING },
{{ 0, 17}, TXT_Unknown },
}
};