diff --git a/src/bot/bot.ts b/src/bot/bot.ts
index 5d66bc4..37fe834 100644
--- a/src/bot/bot.ts
+++ b/src/bot/bot.ts
@@ -8,11 +8,11 @@ import {
 	Interaction,
 } from 'discord.js';
 import _ from 'lodash';
-import { dictionary } from '../dictionary';
-import { ToaduaEntry, toadua } from '../toadua';
+import { dictionary } from '../morphology/dictionary';
+import { ToaduaEntry, toadua } from '../morphology/toadua';
 import { drawTreeToCanvas } from '../tree/draw';
-import { parse } from '../parse';
-import { pngGlossSentence } from '../png-gloss';
+import { parse } from '../modes/parse';
+import { pngGlossSentence } from '../modes/png-gloss';
 import { toEnglish } from '../english/tree';
 import { denotationRenderText } from '../tree/place';
 
diff --git a/src/error.ts b/src/core/error.ts
similarity index 100%
rename from src/error.ts
rename to src/core/error.ts
diff --git a/src/fix.ts b/src/core/fix.ts
similarity index 98%
rename from src/fix.ts
rename to src/core/fix.ts
index e0760c8..05b177d 100644
--- a/src/fix.ts
+++ b/src/core/fix.ts
@@ -7,10 +7,10 @@ import {
 	assertBranch,
 	assertLeaf,
 	effectiveLabel,
-} from './tree';
+} from '../tree';
 import { Impossible } from './error';
 import { reverse } from './misc';
-import { inTone } from './tokenize';
+import { inTone } from '../morphology/tokenize';
 import { Tone } from './types';
 
 interface Quantification {
diff --git a/src/misc.ts b/src/core/misc.ts
similarity index 100%
rename from src/misc.ts
rename to src/core/misc.ts
diff --git a/src/serial.ts b/src/core/serial.ts
similarity index 99%
rename from src/serial.ts
rename to src/core/serial.ts
index bfe9013..328b19b 100644
--- a/src/serial.ts
+++ b/src/core/serial.ts
@@ -1,7 +1,7 @@
 import { Impossible, Ungrammatical, Unimplemented } from './error';
 import { nextCoindex } from './fix';
 import { splitNonEmpty } from './misc';
-import { Branch, Label, Leaf, Tree, effectiveLabel, makeNull } from './tree';
+import { Branch, Label, Leaf, Tree, effectiveLabel, makeNull } from '../tree';
 
 /**
  * Toaq serials are too complicated to parse directly in the context-free
diff --git a/src/types.ts b/src/core/types.ts
similarity index 100%
rename from src/types.ts
rename to src/core/types.ts
diff --git a/src/english/clause-translator.ts b/src/english/clause-translator.ts
index 19dc692..7cefeeb 100644
--- a/src/english/clause-translator.ts
+++ b/src/english/clause-translator.ts
@@ -1,5 +1,5 @@
-import { Impossible, Unimplemented } from '../error';
-import { clean } from '../tokenize';
+import { Impossible, Unimplemented } from '../core/error';
+import { clean } from '../morphology/tokenize';
 import { Leaf, Tree, assertBranch } from '../tree';
 import {
 	VerbForm,
diff --git a/src/english/conjugation.ts b/src/english/conjugation.ts
index d641ed4..b2f45e1 100644
--- a/src/english/conjugation.ts
+++ b/src/english/conjugation.ts
@@ -1,4 +1,4 @@
-import { Unimplemented } from '../error';
+import { Unimplemented } from '../core/error';
 
 export enum VerbForm {
 	First,
diff --git a/src/english/leaf.ts b/src/english/leaf.ts
index 7f6fd2a..7390fda 100644
--- a/src/english/leaf.ts
+++ b/src/english/leaf.ts
@@ -1,5 +1,5 @@
-import { Impossible } from '../error';
-import { Glosser } from '../gloss';
+import { Impossible } from '../core/error';
+import { Glosser } from '../morphology/gloss';
 import { Leaf, Tree } from '../tree';
 import { Constituent } from './clause-translator';
 import { verbFormFor } from './conjugation';
diff --git a/src/english/tree.ts b/src/english/tree.ts
index eb1b0a7..490762e 100644
--- a/src/english/tree.ts
+++ b/src/english/tree.ts
@@ -1,6 +1,6 @@
-import { Impossible, Unimplemented } from '../error';
-import { parse } from '../parse';
-import { bare, clean } from '../tokenize';
+import { Impossible, Unimplemented } from '../core/error';
+import { parse } from '../modes/parse';
+import { bare, clean } from '../morphology/tokenize';
 import { Branch, Leaf, Tree, assertBranch, isQuestion } from '../tree';
 import { ClauseTranslator, Constituent } from './clause-translator';
 import { VerbForm } from './conjugation';
diff --git a/src/grammar.ts b/src/grammar.ts
index ff6b959..dbb35e7 100644
--- a/src/grammar.ts
+++ b/src/grammar.ts
@@ -50,7 +50,7 @@ declare var vocative: any;
 declare var start_parenthetical: any;
 declare var end_parenthetical: any;
 
-import { ToaqTokenizer } from "./tokenize";
+import { ToaqTokenizer } from "./morphology/tokenize";
 import * as TreeModule from "./tree";
 
 const {
diff --git a/src/index.ts b/src/index.ts
index 1c0258b..68d5881 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,17 +1,17 @@
-import { toDocument } from './latex';
+import { toDocument } from './modes/latex';
 import * as fs from 'fs';
-import { Glosser } from './gloss';
+import { Glosser } from './morphology/gloss';
 import yargs from 'yargs';
-import { pngGlossSentence } from './png-gloss';
+import { pngGlossSentence } from './modes/png-gloss';
 import { Tree } from './tree';
-import { fix } from './fix';
-import { trimTree } from './trim';
+import { fix } from './core/fix';
+import { trimTree } from './tree/trim';
 import { drawTreeToCanvas } from './tree/draw';
-import { parse } from './parse';
-import { textual_tree_from_json } from './textual-tree';
-import { testSentences } from './test-sentences';
+import { parse } from './modes/parse';
+import { textual_tree_from_json } from './modes/textual-tree';
+import { testSentences } from './modes/test-sentences';
 import { denote } from './semantics/denote';
-import { ToaqTokenizer } from './tokenize';
+import { ToaqTokenizer } from './morphology/tokenize';
 import { toEnglish } from './english/tree';
 import { denotationRenderText } from './tree/place';
 
diff --git a/src/boxes.ts b/src/modes/boxes.ts
similarity index 96%
rename from src/boxes.ts
rename to src/modes/boxes.ts
index 65c8ba0..5b62d2d 100644
--- a/src/boxes.ts
+++ b/src/modes/boxes.ts
@@ -1,7 +1,7 @@
-import { inTone } from './tokenize';
-import { Tree, assertBranch, skipFree, treeText } from './tree';
-import { Tone } from './types';
-import { Impossible, Ungrammatical, Unimplemented } from './error';
+import { inTone } from '../morphology/tokenize';
+import { Tree, assertBranch, skipFree, treeText } from '../tree';
+import { Tone } from '../core/types';
+import { Impossible, Ungrammatical, Unimplemented } from '../core/error';
 
 export interface PostField {
 	earlyAdjuncts: Tree[];
diff --git a/src/latex.ts b/src/modes/latex.ts
similarity index 94%
rename from src/latex.ts
rename to src/modes/latex.ts
index ae416be..b91df93 100644
--- a/src/latex.ts
+++ b/src/modes/latex.ts
@@ -1,6 +1,6 @@
-import { DTree } from './semantics/model';
-import { toLatex as exprToLatex, typeToLatex } from './semantics/render';
-import { Tree } from './tree';
+import { DTree } from '../semantics/model';
+import { toLatex as exprToLatex, typeToLatex } from '../semantics/render';
+import { Tree } from '../tree';
 
 export function latexEscape(text: string): string {
 	return '{' + text.replace(/Σ/g, '$\\Sigma$') + '}';
diff --git a/src/parse.ts b/src/modes/parse.ts
similarity index 76%
rename from src/parse.ts
rename to src/modes/parse.ts
index ceb3376..3700638 100644
--- a/src/parse.ts
+++ b/src/modes/parse.ts
@@ -1,6 +1,6 @@
 import nearley from 'nearley';
-import grammar from './grammar';
-import { Tree } from './tree';
+import grammar from '../grammar';
+import { Tree } from '../tree';
 
 export function parse(sentence: string): Tree[] {
 	const parser = new nearley.Parser(nearley.Grammar.fromCompiled(grammar));
diff --git a/src/png-gloss.ts b/src/modes/png-gloss.ts
similarity index 97%
rename from src/png-gloss.ts
rename to src/modes/png-gloss.ts
index 85109e9..c661864 100644
--- a/src/png-gloss.ts
+++ b/src/modes/png-gloss.ts
@@ -1,5 +1,5 @@
 import { loadImage, createCanvas, registerFont } from 'canvas';
-import { Glosser } from './gloss';
+import { Glosser } from '../morphology/gloss';
 
 export function pngGlossSentence(
 	sentence: string,
diff --git a/src/test-sentences.ts b/src/modes/test-sentences.ts
similarity index 100%
rename from src/test-sentences.ts
rename to src/modes/test-sentences.ts
diff --git a/src/textual-tree.ts b/src/modes/textual-tree.ts
similarity index 97%
rename from src/textual-tree.ts
rename to src/modes/textual-tree.ts
index 76d1932..7e11d35 100644
--- a/src/textual-tree.ts
+++ b/src/modes/textual-tree.ts
@@ -1,4 +1,4 @@
-import { Tree } from './tree';
+import { Tree } from '../tree';
 
 function ttree_converted(data: Tree): { label: string; branches: any } {
 	if ('word' in data) {
diff --git a/src/dictionary.ts b/src/morphology/dictionary.ts
similarity index 99%
rename from src/dictionary.ts
rename to src/morphology/dictionary.ts
index 900ab80..4e98789 100644
--- a/src/dictionary.ts
+++ b/src/morphology/dictionary.ts
@@ -1,5 +1,5 @@
 import { inTone } from './tokenize';
-import { Tone } from './types';
+import { Tone } from '../core/types';
 
 export const verbTypes = [
 	'name quote',
diff --git a/src/frame.test.ts b/src/morphology/frame.test.ts
similarity index 100%
rename from src/frame.test.ts
rename to src/morphology/frame.test.ts
diff --git a/src/frame.ts b/src/morphology/frame.ts
similarity index 100%
rename from src/frame.ts
rename to src/morphology/frame.ts
diff --git a/src/gloss.test.ts b/src/morphology/gloss.test.ts
similarity index 95%
rename from src/gloss.test.ts
rename to src/morphology/gloss.test.ts
index 9aaf3ed..5361a49 100644
--- a/src/gloss.test.ts
+++ b/src/morphology/gloss.test.ts
@@ -1,5 +1,5 @@
 import { test, expect } from 'vitest';
-import { Glosser } from './gloss';
+import { Glosser } from './morphology/gloss';
 
 test('it glosses Toaq words', () => {
 	const glosser = new Glosser(false);
diff --git a/src/gloss.ts b/src/morphology/gloss.ts
similarity index 97%
rename from src/gloss.ts
rename to src/morphology/gloss.ts
index 3ebca56..9da5516 100644
--- a/src/gloss.ts
+++ b/src/morphology/gloss.ts
@@ -1,7 +1,7 @@
 import { Entry, dictionary } from './dictionary';
 import { bare, clean, splitPrefixes, tone } from './tokenize';
-import { Tone } from './types';
-import toaduaGlossesJson from '../data/toadua/toadua.json';
+import { Tone } from '../core/types';
+import toaduaGlossesJson from '../../data/toadua/toadua.json';
 
 interface Gloss {
 	toaq: string;
diff --git a/src/toadua.ts b/src/morphology/toadua.ts
similarity index 100%
rename from src/toadua.ts
rename to src/morphology/toadua.ts
diff --git a/src/tokenize.test.ts b/src/morphology/tokenize.test.ts
similarity index 99%
rename from src/tokenize.test.ts
rename to src/morphology/tokenize.test.ts
index 020358a..7bb30d3 100644
--- a/src/tokenize.test.ts
+++ b/src/morphology/tokenize.test.ts
@@ -9,7 +9,7 @@ import {
 	splitPrefixes,
 	ToaqTokenizer,
 } from './tokenize';
-import { Tone } from './types';
+import { Tone } from '../core/types';
 
 test('it cleans up Toaq words', () => {
 	expect(clean('gi')).toEqual('gı');
diff --git a/src/tokenize.ts b/src/morphology/tokenize.ts
similarity index 98%
rename from src/tokenize.ts
rename to src/morphology/tokenize.ts
index 7672c4a..f062f7f 100644
--- a/src/tokenize.ts
+++ b/src/morphology/tokenize.ts
@@ -1,6 +1,6 @@
 import { dictionary, underscoredWordTypes } from './dictionary';
-import { Impossible, Ungrammatical } from './error';
-import { Tone } from './types';
+import { Impossible, Ungrammatical } from '../core/error';
+import { Tone } from '../core/types';
 
 // Vyái → ꝡáı
 export function clean(word: string): string {
diff --git a/src/grammar-preprocessor.test.ts b/src/scripts/grammar-preprocessor.test.ts
similarity index 100%
rename from src/grammar-preprocessor.test.ts
rename to src/scripts/grammar-preprocessor.test.ts
diff --git a/src/grammar-preprocessor.ts b/src/scripts/grammar-preprocessor.ts
similarity index 100%
rename from src/grammar-preprocessor.ts
rename to src/scripts/grammar-preprocessor.ts
diff --git a/src/semantics/compose.ts b/src/semantics/compose.ts
index d08bcd8..b4cfde5 100644
--- a/src/semantics/compose.ts
+++ b/src/semantics/compose.ts
@@ -1,5 +1,5 @@
-import { Impossible, Unimplemented } from '../error';
-import { some } from '../misc';
+import { Impossible, Unimplemented } from '../core/error';
+import { some } from '../core/misc';
 import { Branch, StrictTree, effectiveLabel } from '../tree';
 import {
 	and,
diff --git a/src/semantics/data.ts b/src/semantics/data.ts
index 96e3a5d..a468973 100644
--- a/src/semantics/data.ts
+++ b/src/semantics/data.ts
@@ -1,4 +1,4 @@
-import { SubjectType } from '../dictionary';
+import { SubjectType } from '../morphology/dictionary';
 import { CovertValue, Label } from '../tree';
 import {
 	after,
diff --git a/src/semantics/denote.test.ts b/src/semantics/denote.test.ts
index 2dfa160..eda64a0 100644
--- a/src/semantics/denote.test.ts
+++ b/src/semantics/denote.test.ts
@@ -1,10 +1,10 @@
 import { test, expect } from 'vitest';
-import { parse } from '../parse';
-import { fix } from '../fix';
+import { parse } from '../modes/parse';
+import { fix } from '../core/fix';
 import { denote } from './denote';
 import { Expr } from './model';
 import { toPlainText } from './render';
-import { Impossible } from '../error';
+import { Impossible } from '../core/error';
 import { freeVariableUsages } from './operations';
 
 function d(sentence: string): string {
diff --git a/src/semantics/denote.ts b/src/semantics/denote.ts
index 85a80c0..e1f8947 100644
--- a/src/semantics/denote.ts
+++ b/src/semantics/denote.ts
@@ -1,12 +1,12 @@
-import { VerbEntry } from '../dictionary';
+import { VerbEntry } from '../morphology/dictionary';
 import {
 	Impossible,
 	Ungrammatical,
 	Unimplemented,
 	Unrecognized,
-} from '../error';
-import { splitNonEmpty } from '../misc';
-import { inTone } from '../tokenize';
+} from '../core/error';
+import { splitNonEmpty } from '../core/misc';
+import { inTone } from '../morphology/tokenize';
 import {
 	Branch,
 	CovertWord,
@@ -15,7 +15,7 @@ import {
 	Word,
 	effectiveLabel,
 } from '../tree';
-import { Tone } from '../types';
+import { Tone } from '../core/types';
 import { compose } from './compose';
 import {
 	adjuncts,
diff --git a/src/semantics/model.ts b/src/semantics/model.ts
index 52c6cd7..b91deb8 100644
--- a/src/semantics/model.ts
+++ b/src/semantics/model.ts
@@ -1,4 +1,4 @@
-import { Impossible } from '../error';
+import { Impossible } from '../core/error';
 import { Branch, Leaf } from '../tree';
 import { toPlainText, typesToPlainText, typeToPlainText } from './render';
 
diff --git a/src/semantics/operations.ts b/src/semantics/operations.ts
index 342e6ea..31b2655 100644
--- a/src/semantics/operations.ts
+++ b/src/semantics/operations.ts
@@ -1,5 +1,5 @@
-import { Impossible } from '../error';
-import { enumerate, reverse, some, zip } from '../misc';
+import { Impossible } from '../core/error';
+import { enumerate, reverse, some, zip } from '../core/misc';
 import {
 	app,
 	Binding,
diff --git a/src/semantics/render.ts b/src/semantics/render.ts
index d92b453..c793397 100644
--- a/src/semantics/render.ts
+++ b/src/semantics/render.ts
@@ -1,4 +1,4 @@
-import { Impossible } from '../error';
+import { Impossible } from '../core/error';
 import { CompactExpr } from './compact';
 import { Expr, ExprType } from './model';
 
diff --git a/src/tree/functions.ts b/src/tree/functions.ts
index f4bc2fd..a701e45 100644
--- a/src/tree/functions.ts
+++ b/src/tree/functions.ts
@@ -1,4 +1,4 @@
-import { bare, clean, repairTones } from '../tokenize';
+import { bare, clean, repairTones } from '../morphology/tokenize';
 import { Label, Tree, assertBranch } from './types';
 
 export function isBoringNull(tree: Tree): boolean {
diff --git a/src/tree/productions.ts b/src/tree/productions.ts
index c8335f4..2de545e 100644
--- a/src/tree/productions.ts
+++ b/src/tree/productions.ts
@@ -1,7 +1,7 @@
-import { dictionary } from '../dictionary';
-import { getFrame } from '../serial';
-import { toadua } from '../toadua';
-import { bare, ToaqToken, tone } from '../tokenize';
+import { dictionary } from '../morphology/dictionary';
+import { getFrame } from '../core/serial';
+import { toadua } from '../morphology/toadua';
+import { bare, ToaqToken, tone } from '../morphology/tokenize';
 import {
 	endsInClauseBoundary,
 	endsInDP,
diff --git a/src/trim.ts b/src/tree/trim.ts
similarity index 95%
rename from src/trim.ts
rename to src/tree/trim.ts
index ef35965..f3488a1 100644
--- a/src/trim.ts
+++ b/src/tree/trim.ts
@@ -1,4 +1,4 @@
-import { Tree, isBoringNull } from './tree';
+import { Tree, isBoringNull } from '.';
 
 /**
  * Trim null leaves from a tree and coalesce the labels. For example,
diff --git a/src/tree/types.ts b/src/tree/types.ts
index 6386f70..e7b7e7d 100644
--- a/src/tree/types.ts
+++ b/src/tree/types.ts
@@ -1,6 +1,6 @@
-import { Entry } from '../dictionary';
-import { Impossible } from '../error';
-import { Tone } from '../types';
+import { Entry } from '../morphology/dictionary';
+import { Impossible } from '../core/error';
+import { Tone } from '../core/types';
 
 export interface Word {
 	covert: false;
diff --git a/src/web/Boxes.tsx b/src/web/Boxes.tsx
index 56c95c7..73ddeb1 100644
--- a/src/web/Boxes.tsx
+++ b/src/web/Boxes.tsx
@@ -1,10 +1,10 @@
 import { ReactNode, createContext, useContext } from 'react';
 import { useDarkMode } from 'usehooks-ts';
-import { BoxClause, BoxSentence, PostField, circled } from '../boxes';
-import { Glosser } from '../gloss';
+import { BoxClause, BoxSentence, PostField, circled } from '../modes/boxes';
+import { Glosser } from '../morphology/gloss';
 import { Tree } from '../tree';
 import './Boxes.css';
-import { repairTones } from '../tokenize';
+import { repairTones } from '../morphology/tokenize';
 
 interface BoxesContext {
 	cpIndices: Map<Tree, number>;
diff --git a/src/web/Main.tsx b/src/web/Main.tsx
index 8681209..2d175a6 100644
--- a/src/web/Main.tsx
+++ b/src/web/Main.tsx
@@ -3,15 +3,15 @@ import _ from 'lodash';
 import { ReactElement, useEffect, useRef, useState } from 'react';
 import { useDarkMode, useLocalStorage } from 'usehooks-ts';
 
-import { boxify } from '../boxes';
-import { trimTree } from '../trim';
+import { boxify } from '../modes/boxes';
+import { trimTree } from '../tree/trim';
 import { treeToEnglish } from '../english/tree';
-import { fix } from '../fix';
-import { Glosser } from '../gloss';
-import { parse } from '../parse';
+import { fix } from '../core/fix';
+import { Glosser } from '../morphology/gloss';
+import { parse } from '../modes/parse';
 import { denote } from '../semantics/denote';
 import { toLatex, toPlainText } from '../semantics/render';
-import { textual_tree_from_json } from '../textual-tree';
+import { textual_tree_from_json } from '../modes/textual-tree';
 import { Tree } from '../tree';
 import { drawTreeToCanvas } from '../tree/draw';
 import { Theme } from '../tree/theme';
@@ -20,7 +20,7 @@ import {
 	compact as compactDenotation,
 	CompactExpr,
 } from '../semantics/compact';
-import { ToaqTokenizer } from '../tokenize';
+import { ToaqTokenizer } from '../morphology/tokenize';
 import { denotationRenderLatex, denotationRenderText } from '../tree/place';
 import { Boxes } from './Boxes';
 import { Tokens } from './Tokens';
diff --git a/src/web/Sentences.tsx b/src/web/Sentences.tsx
index c68a08d..62c3412 100644
--- a/src/web/Sentences.tsx
+++ b/src/web/Sentences.tsx
@@ -1,6 +1,6 @@
 import _ from 'lodash';
 import { useMemo, useState } from 'react';
-import { parse } from '../parse';
+import { parse } from '../modes/parse';
 import { Main, Mode } from './Main';
 import './Sentences.css';
 import { useInView } from 'react-intersection-observer';
@@ -9,7 +9,7 @@ import { useInView } from 'react-intersection-observer';
 import refgramSentencesTxt from '../../sentences/refgram.txt?raw';
 // @ts-ignore
 import aSentencesTxt from '../../sentences/a.txt?raw';
-import { fix } from '../fix';
+import { fix } from '../core/fix';
 import { denote } from '../semantics/denote';
 
 const rSentences: string[] = refgramSentencesTxt.split('\n');
diff --git a/src/web/Tokens.tsx b/src/web/Tokens.tsx
index f5753da..fade631 100644
--- a/src/web/Tokens.tsx
+++ b/src/web/Tokens.tsx
@@ -1,5 +1,5 @@
-import { Glosser } from '../gloss';
-import { ToaqToken } from '../tokenize';
+import { Glosser } from '../morphology/gloss';
+import { ToaqToken } from '../morphology/tokenize';
 import './Tokens.css';
 
 function Token(props: { token: ToaqToken }) {
diff --git a/tsconfig.json b/tsconfig.json
index f32788a..def46d4 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -31,7 +31,7 @@
 		/* Modules */
 		"module": "commonjs" /* Specify what module code is generated. */,
 		// "rootDir": "./",                                  /* Specify the root folder within your source files. */
-		"moduleResolution": "node",                       /* Specify how TypeScript looks up a file from a given module specifier. */
+		"moduleResolution": "node" /* Specify how TypeScript looks up a file from a given module specifier. */,
 		// "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
 		// "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
 		// "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */