Complementizer

The lexical core of the complementizer (clause-typing morpheme) as a grammatical object, modeled on Syntax/Category/Pronoun/: its exponent as morphs plus the consensus clause-typing axes, each drawn from existing substrate. Per-language fragments instantiate it — free subordinators like that and oti, affixal clause-typers like Buryat -žA and Tigrinya zɨ-, grammaticalized say-roots like Buryat gɘ.

Main declarations

• Complementizer: the general complementizer object.
• Complementizer.Licenser: the adnominal or adverbal licensing category.
• Complementizer.form: the surface form with boundary notation.
• Complementizer.IsFinite: finiteness of the typed clause, read off the verb form or the coding.

Implementation notes

Framework-specific head assignments (a cartographic Force/Fin split, a ContP-exponence claim, an [n]-feature) are not fields; they live as Studies-local projections over these entries, and the schema carries no denotation (cf. Adjective's deferred degree semantics). Field conventions:

• morphs lists the exponent in surface order: a free word (that), a bound root that never surfaces bare (Buryat gɘ), or the affixes of a prefix or suffix complex (Tigrinya kɛm-zɨ-). Attachment is read off the morphs' kinds rather than stored.
• types: the sentence types of the clauses the morpheme types, a selection; a complementizer of polar questions records .only .polar.
• licenser names the licensing projection, not the morphological host stem (which for a suffixal clause-typer is the verb it attaches to).
• factive records only a lexical factive presupposition carried by the morpheme itself (Greek pu); it stays false when factivity tracks the verb or the construction — derived in Studies, never stored.