* STRING and STRING_NOVAR, URL, FILE setting types should show `<empty>` as the default, unless overridden * NAMED_FILTER and NAMED_LIST_FILTER have no defaults, so they shouldn't show default * STRLIST and BOOLLIST - not sure, don't show or be `<empty list>`? * All other settings should error out if default is missing
<empty>as the default, unless overridden<empty list>?