orphan:missing
: textual gap in the source
This subrelation of orphan
is used to explicitly mark uncertain dependences originating from physical gaps in the original textual source.
Even when the content of such a gap is, at least from the point of view of its part of speech, predictable, if not completely reconstructible (e.g. in the case of repetitive formulaic expressions), we may refrain to guess the corresponding syntactic relations, and instead report this exceptional case as a relation subtype.
From the LLCT treebank, which contains transcriptions of sometimes corrupt notarial chartulae of the Early Middle Ages:
orphan:missing in other languages: [la]