[glue-wg] Placeholder for IDs?

(other than an implication in the placeholder section that strings may be UTF-8).

While I'm at it, another thing that came up recently was that we don't seem to have a placeholder for unique IDs, e.g. a mandatory foreign key. Do you have any suggestions? (So far I went for "$UNDEFINED$" in the absence of inspiration ...) Stephen -- Scanned by iCritical.