#Grammar

8 sub-sections managing the full lifecycle of grammar rules.

Navigate: click Grammar in the sidebar.

#Syntax Configuration

• Basic word order: SVO / SOV / VSO / VOS / OVS / OSV
• Modifier position: Before head / after head
• Adposition type: Preposition / postposition

#Step-by-step: Set a minimal syntax profile

1. Open Grammar -> Syntax.
2. Choose a base word order (for example SOV).
3. Set modifier position (before head or after head).
4. Set adposition type (preposition or postposition).
5. Save and switch to Sandbox -> Syntax mode to verify ordering behavior.

#Parts of Speech

Customize POS to define your language's word classes:

• Name, abbreviation (for glossing)
• Word-form pattern (regex)
• Whether gloss/pronunciation is required

Defaults: Noun, Verb, Adjective, Adverb, Pronoun, Adposition, Conjunction, Interjection.

#Step-by-step: Add a custom POS

1. Open Grammar -> POS.
2. Click Add POS.
3. Fill Name and Abbr (used in gloss labels).
4. Optionally add a regex word pattern.
5. Set whether definition/pronunciation is required.

#Inflectional Dimensions

Each dimension can be associated with specific POS (e.g., Case applies only to nouns and pronouns).

#Step-by-step: Build two core dimensions

1. Open Grammar -> Dimensions.
2. Add Number with values SG, PL.
3. Add Tense with values PRES, PAST.
4. Bind Number to nouns and Tense to verbs.
5. Save and continue to inflection rules.

#Inflection Rules

6 morphological operation types:

Conditional logic: Each rule supports IF/ELSE branching based on word-final/initial phoneme class or regex match.

#Step-by-step: Add production-ready inflection rules

1. Open Grammar -> Inflection.
2. Add PL suffix rule with affix = en.
3. Add PAST suffix rule with affix = ka.
4. (Optional) add a conditional variant for vowel-final stems.
5. Use Grammar -> Inflection Test to validate outputs.

#SCA integration toggle (advanced)

Each inflection rule has an SCA toggle (Allow SCA edits):

• OFF (default): the rule is protected from SCA batch rewrite.
• ON: the rule is eligible for SCA rewrite (affix/infix/circumfix/ablaut fields as applicable).

Recommended rollout:

1. Keep all toggles OFF.
2. Enable only high-confidence historical rules.
3. Run SCA batch preview and review changes.
4. Expand scope gradually.

#Inflection Matrix

Grid view of all POS × dimension values, allowing quick coverage checks.

#Step-by-step: Coverage audit

1. Open Grammar -> Matrix.
2. Scan for empty intersections (POS × value).
3. Add missing rules and re-check matrix until no critical gaps remain.

#Inflection Test

Input a test word + select POS → instantly see all applicable inflection rules applied with detailed logs.

#Step-by-step: Regression test after rule edits

1. Prepare 5-10 representative stems.
2. Test each stem in the panel after rule changes.
3. Confirm expected forms for all major dimensions.
4. If any form regresses, adjust rule ordering or regex constraints.

#Derivation Rules

• POS conversion: Source → target POS (e.g., verb→noun: -er for agent)
• Reuses morphology engine: All 6 operation types available
• Semantic notes: Annotate semantic shift
• Batch preview: Preview derivations for all matching lexicon entries
• Selective import: Select all / deselect / per-row checkbox before import
• One-click import: Import selected derived words into the lexicon

#Step-by-step: Derive verbs into agent nouns

1. Open Grammar -> Derivation.
2. Add a rule: source Verb, target Noun, type Suffix, affix -er.
3. Click Preview to generate batch candidates.
4. Deselect noisy candidates.
5. Click Import to write selected entries to lexicon.

#SCA integration toggle (advanced)

Each derivation rule also supports Allow SCA edits:

• OFF (default): derivation rule surface remains unchanged by SCA.
• ON: derivation affix structures can evolve under SCA batch apply.

#Grammar Manual

Write readable reference documentation in Markdown chapters. Embed paradigm tables with {{paradigm:pos_id:test_word}}. Drag to reorder chapters.

#Step-by-step: Create a publishable grammar chapter

1. Open Grammar -> Manual.
2. Add chapter Noun Morphology.
3. Write rules in Markdown.
4. Insert a paradigm marker with a test stem.
5. Reorder chapters for final reading flow.

#Advanced examples

#Example A: Conditional plural allomorphy

• Rule 1: if stem ends with vowel, plural suffix = -n
• Rule 2: else plural suffix = -en

Validation steps:

1. Test kala -> kala-n.
2. Test mart -> mart-en.
3. Confirm matrix still covers all noun-number combinations.

#Example B: Safe historical grammar evolution

1. Enable Allow SCA edits only on two noun suffix rules.
2. Run SCA batch preview.
3. Check scope and field columns.
4. Apply changes and re-run inflection tests.