Adding the new section on the “Namespace” slot.

grammar/src/morphology/namespace.md

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+# Namespace
+
+The pre-root namespace slot determines the namespace for the following word base. Here are its possible values:
+
+| Form | Purpose |
+|------|---------|
+| ∅    | Default form: lexical predicate base used directly as predicate, as opposed to e.g. being used as a name. |
+| ʎe   | Foreign vocabulary namespace, used for foreign loanwords which would otherwise be homophonous with an already existing native word base. |
+| ña   | Sound-based, contextually resolved proper name reference: “[NTR] is/are the one(s) named (by sound) as [BASE]. |
+
+The sound-based proper name prefix ⟪ña-⟫ introduces a base that refers by name to an individual, be it a person, a place or an event. Its use is discouraged when the context of utterance is insufficient for the addressee to resolve the identity of the named one. Foreign names are rendered phonetically using Nahaıwa's phonotactics and orthography.
+
+```
+┌───────────────  
+│ ◆ Aınayá tañahwán.
+│ ❖ ASR꞊1:NTR-thing NTR-NTRᵢ-NAME-Juan
+│ ➥  Juan is me.
+└─  
+```
+
+Related to the ⟪ña⟫ namespace, there also exists the extensional prefix ⟪q◈⟫ for concept-based name references, for example: ⟪-qa-cʼáo⟫, “[NTR] is the one named after the concept of being snow”. Generally, Nahaıwa draws a clear-cut distinction beteen sound-based names (which don't have an inherent meaning in Nahaıwa) and meaning-based names, based on semantic concepts.
+