diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
deleted file mode 100644
index ed2a819..0000000
--- a/.github/workflows/deploy.yml
+++ /dev/null
@@ -1,41 +0,0 @@
-name: "Build and deploy"
-
-on:
-  # Trigger the workflow every time you push to the `main` branch
-  # Using a different branch name? Replace `main` with your branch's name
-  push:
-    tags:
-      - "*"
-
-  # Allows you to run this workflow manually from the Actions tab on GitHub.
-  workflow_dispatch:
-
-# Allow this job to clone the repo and create a page deployment
-permissions:
-  contents: write
-jobs:
-  build-and-deploy:
-    concurrency: ci-${{ github.ref }} # Recommended if you intend to make multiple deployments in quick succession.
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout 🛎️
-        uses: actions/checkout@v4
-
-      - name: Install and Build 🔧
-        run: |
-          npm ci
-          npm run docs
-
-      - name: Deploy 🚀
-        uses: JamesIves/github-pages-deploy-action@v4
-        with:
-          branch: gh-pages # The branch the action should deploy to.
-          folder: docs-dist # The folder the action should deploy.
-
-      # When running the Astro build, types and content are updated automatically
-      # This action commits the changes
-      - name: Commit changes from Astro 🚀
-        uses: stefanzweifel/git-auto-commit-action@v5
-        with:
-          commit_message: Update astro files (automated)
-          branch: main
diff --git a/.gitignore b/.gitignore
index 9495685..fb42542 100644
--- a/.gitignore
+++ b/.gitignore
@@ -16,4 +16,5 @@ node_modules
 *.test.js
 /dist
 /docs/src/content/docs/api/**/*
+/docs/.astro/
 /docs-dist
\ No newline at end of file
diff --git a/docs/.astro/astro/content.d.ts b/docs/.astro/astro/content.d.ts
deleted file mode 100644
index 1fcbb32..0000000
--- a/docs/.astro/astro/content.d.ts
+++ /dev/null
@@ -1,291 +0,0 @@
-declare module 'astro:content' {
-	interface Render {
-		'.mdx': Promise<{
-			Content: import('astro').MarkdownInstance<{}>['Content'];
-			headings: import('astro').MarkdownHeading[];
-			remarkPluginFrontmatter: Record<string, any>;
-		}>;
-	}
-}
-
-declare module 'astro:content' {
-	interface RenderResult {
-		Content: import('astro/runtime/server/index.js').AstroComponentFactory;
-		headings: import('astro').MarkdownHeading[];
-		remarkPluginFrontmatter: Record<string, any>;
-	}
-	interface Render {
-		'.md': Promise<RenderResult>;
-	}
-
-	export interface RenderedContent {
-		html: string;
-		metadata?: {
-			imagePaths: Array<string>;
-			[key: string]: unknown;
-		};
-	}
-}
-
-declare module 'astro:content' {
-	type Flatten<T> = T extends { [K: string]: infer U } ? U : never;
-
-	export type CollectionKey = keyof AnyEntryMap;
-	export type CollectionEntry<C extends CollectionKey> = Flatten<AnyEntryMap[C]>;
-
-	export type ContentCollectionKey = keyof ContentEntryMap;
-	export type DataCollectionKey = keyof DataEntryMap;
-
-	type AllValuesOf<T> = T extends any ? T[keyof T] : never;
-	type ValidContentEntrySlug<C extends keyof ContentEntryMap> = AllValuesOf<
-		ContentEntryMap[C]
-	>['slug'];
-
-	/** @deprecated Use `getEntry` instead. */
-	export function getEntryBySlug<
-		C extends keyof ContentEntryMap,
-		E extends ValidContentEntrySlug<C> | (string & {}),
-	>(
-		collection: C,
-		// Note that this has to accept a regular string too, for SSR
-		entrySlug: E,
-	): E extends ValidContentEntrySlug<C>
-		? Promise<CollectionEntry<C>>
-		: Promise<CollectionEntry<C> | undefined>;
-
-	/** @deprecated Use `getEntry` instead. */
-	export function getDataEntryById<C extends keyof DataEntryMap, E extends keyof DataEntryMap[C]>(
-		collection: C,
-		entryId: E,
-	): Promise<CollectionEntry<C>>;
-
-	export function getCollection<C extends keyof AnyEntryMap, E extends CollectionEntry<C>>(
-		collection: C,
-		filter?: (entry: CollectionEntry<C>) => entry is E,
-	): Promise<E[]>;
-	export function getCollection<C extends keyof AnyEntryMap>(
-		collection: C,
-		filter?: (entry: CollectionEntry<C>) => unknown,
-	): Promise<CollectionEntry<C>[]>;
-
-	export function getEntry<
-		C extends keyof ContentEntryMap,
-		E extends ValidContentEntrySlug<C> | (string & {}),
-	>(entry: {
-		collection: C;
-		slug: E;
-	}): E extends ValidContentEntrySlug<C>
-		? Promise<CollectionEntry<C>>
-		: Promise<CollectionEntry<C> | undefined>;
-	export function getEntry<
-		C extends keyof DataEntryMap,
-		E extends keyof DataEntryMap[C] | (string & {}),
-	>(entry: {
-		collection: C;
-		id: E;
-	}): E extends keyof DataEntryMap[C]
-		? Promise<DataEntryMap[C][E]>
-		: Promise<CollectionEntry<C> | undefined>;
-	export function getEntry<
-		C extends keyof ContentEntryMap,
-		E extends ValidContentEntrySlug<C> | (string & {}),
-	>(
-		collection: C,
-		slug: E,
-	): E extends ValidContentEntrySlug<C>
-		? Promise<CollectionEntry<C>>
-		: Promise<CollectionEntry<C> | undefined>;
-	export function getEntry<
-		C extends keyof DataEntryMap,
-		E extends keyof DataEntryMap[C] | (string & {}),
-	>(
-		collection: C,
-		id: E,
-	): E extends keyof DataEntryMap[C]
-		? Promise<DataEntryMap[C][E]>
-		: Promise<CollectionEntry<C> | undefined>;
-
-	/** Resolve an array of entry references from the same collection */
-	export function getEntries<C extends keyof ContentEntryMap>(
-		entries: {
-			collection: C;
-			slug: ValidContentEntrySlug<C>;
-		}[],
-	): Promise<CollectionEntry<C>[]>;
-	export function getEntries<C extends keyof DataEntryMap>(
-		entries: {
-			collection: C;
-			id: keyof DataEntryMap[C];
-		}[],
-	): Promise<CollectionEntry<C>[]>;
-
-	export function render<C extends keyof AnyEntryMap>(
-		entry: AnyEntryMap[C][string],
-	): Promise<RenderResult>;
-
-	export function reference<C extends keyof AnyEntryMap>(
-		collection: C,
-	): import('astro/zod').ZodEffects<
-		import('astro/zod').ZodString,
-		C extends keyof ContentEntryMap
-			? {
-					collection: C;
-					slug: ValidContentEntrySlug<C>;
-				}
-			: {
-					collection: C;
-					id: keyof DataEntryMap[C];
-				}
-	>;
-	// Allow generic `string` to avoid excessive type errors in the config
-	// if `dev` is not running to update as you edit.
-	// Invalid collection names will be caught at build time.
-	export function reference<C extends string>(
-		collection: C,
-	): import('astro/zod').ZodEffects<import('astro/zod').ZodString, never>;
-
-	type ReturnTypeOrOriginal<T> = T extends (...args: any[]) => infer R ? R : T;
-	type InferEntrySchema<C extends keyof AnyEntryMap> = import('astro/zod').infer<
-		ReturnTypeOrOriginal<Required<ContentConfig['collections'][C]>['schema']>
-	>;
-
-	type ContentEntryMap = {
-		"docs": {
-"api/README.md": {
-	id: "api/README.md";
-  slug: "api/readme";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/classes/SBL.md": {
-	id: "api/classes/SBL.md";
-  slug: "api/classes/sbl";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/classes/Schema.md": {
-	id: "api/classes/Schema.md";
-  slug: "api/classes/schema";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/classes/Text.md": {
-	id: "api/classes/Text.md";
-  slug: "api/classes/text";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/functions/remove.md": {
-	id: "api/functions/remove.md";
-  slug: "api/functions/remove";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/functions/sequence.md": {
-	id: "api/functions/sequence.md";
-  slug: "api/functions/sequence";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/functions/transliterate.md": {
-	id: "api/functions/transliterate.md";
-  slug: "api/functions/transliterate";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/interfaces/ClusterFeature.md": {
-	id: "api/interfaces/ClusterFeature.md";
-  slug: "api/interfaces/clusterfeature";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/interfaces/HebrewFeature.md": {
-	id: "api/interfaces/HebrewFeature.md";
-  slug: "api/interfaces/hebrewfeature";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/interfaces/PassThrough.md": {
-	id: "api/interfaces/PassThrough.md";
-  slug: "api/interfaces/passthrough";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/interfaces/RemoveOptions.md": {
-	id: "api/interfaces/RemoveOptions.md";
-  slug: "api/interfaces/removeoptions";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/interfaces/SylOpts.md": {
-	id: "api/interfaces/SylOpts.md";
-  slug: "api/interfaces/sylopts";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/interfaces/SyllableFeature.md": {
-	id: "api/interfaces/SyllableFeature.md";
-  slug: "api/interfaces/syllablefeature";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/interfaces/WordFeature.md": {
-	id: "api/interfaces/WordFeature.md";
-  slug: "api/interfaces/wordfeature";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/type-aliases/ClusterCallback.md": {
-	id: "api/type-aliases/ClusterCallback.md";
-  slug: "api/type-aliases/clustercallback";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/type-aliases/SyllableCallback.md": {
-	id: "api/type-aliases/SyllableCallback.md";
-  slug: "api/type-aliases/syllablecallback";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"api/type-aliases/WordCallback.md": {
-	id: "api/type-aliases/WordCallback.md";
-  slug: "api/type-aliases/wordcallback";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".md"] };
-"getting-started/quick-start.mdx": {
-	id: "getting-started/quick-start.mdx";
-  slug: "getting-started/quick-start";
-  body: string;
-  collection: "docs";
-  data: InferEntrySchema<"docs">
-} & { render(): Render[".mdx"] };
-};
-
-	};
-
-	type DataEntryMap = {
-		
-	};
-
-	type AnyEntryMap = ContentEntryMap & DataEntryMap;
-
-	export type ContentConfig = typeof import("../../src/content/config.js");
-}
diff --git a/docs/.astro/settings.json b/docs/.astro/settings.json
deleted file mode 100644
index e10acec..0000000
--- a/docs/.astro/settings.json
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-	"_variables": {
-		"lastUpdateCheck": 1732324633605
-	}
-}
\ No newline at end of file
diff --git a/docs/.astro/types.d.ts b/docs/.astro/types.d.ts
deleted file mode 100644
index 9a2a78c..0000000
--- a/docs/.astro/types.d.ts
+++ /dev/null
@@ -1,2 +0,0 @@
-/// <reference types="astro/client" />
-/// <reference path="astro/content.d.ts" />
\ No newline at end of file
diff --git a/docs/astro.config.mjs b/docs/astro.config.mjs
index 39e4b07..5035c9a 100644
--- a/docs/astro.config.mjs
+++ b/docs/astro.config.mjs
@@ -3,7 +3,7 @@ import { defineConfig } from "astro/config";
 import starlightTypeDoc, { typeDocSidebarGroup } from "starlight-typedoc";
 import { remarkBasePath } from "./prepend_base_path.js";
 
-const basePath = process.env.NODE_ENV === "production" ? "/hebrew-transliteration" : "/";
+const basePath = process.env.NODE_ENV === "production" ? "/hebrew-transliteration/" : "/";
 
 // https://astro.build/config
 export default defineConfig({
@@ -22,7 +22,7 @@ export default defineConfig({
   redirects: {
     "/": {
       status: 302,
-      destination: `${basePath}/getting-started/quick-start`
+      destination: `${basePath}getting-started/quick-start`
     }
   },
   integrations: [
diff --git a/src/schema.ts b/src/schema.ts
index 65ef6a7..270f460 100644
--- a/src/schema.ts
+++ b/src/schema.ts
@@ -2048,7 +2048,27 @@ export class SBL extends Schema {
   declare DIVINE_NAME_ELOHIM: Schema["DIVINE_NAME_ELOHIM"];
   /** @category Orthographic Features @default undefined */
   declare SYLLABLE_SEPARATOR: Schema["SYLLABLE_SEPARATOR"];
-  /** @category Orthographic Features @default undefined  */
+  /**
+   * @category Orthographic Features
+   * @default
+   * ```js
+   * [
+   *  {
+   *    FEATURE: "syllable",
+   *    HEBREW: /[\u{05B4}\u{05BB}]/u,
+   *    TRANSLITERATION: (syllable, heb, schema) => {
+   *      const hasMater = syllable.clusters.some((cluster) => cluster.isMater);
+   *      if (syllable.isAccented && !hasMater) {
+   *        const macron = "\u0304";
+   *        const output = syllable.hasVowelName("HIRIQ") ? schema["HIRIQ"] + macron : schema["QUBUTS"] + macron;
+   *        return syllable.text.replace(heb, output.normalize("NFC"));
+   *      }
+   *      return syllable.text;
+   *    }
+   *  }
+   * ]
+   * ```
+   */
   declare ADDITIONAL_FEATURES: Schema["ADDITIONAL_FEATURES"];
   /** @category Orthographic Features @default undefined */
   declare STRESS_MARKER: Schema["STRESS_MARKER"];
@@ -2087,7 +2107,7 @@ export class SBL extends Schema {
       QAMATS: schema.QAMATS ?? "ā",
       HOLAM: schema.HOLAM ?? "ō",
       HOLAM_HASER: schema.HOLAM_HASER ?? "ō",
-      QUBUTS: schema.QUBUTS ?? "ū",
+      QUBUTS: schema.QUBUTS ?? "u",
       DAGESH: schema.DAGESH ?? "",
       DAGESH_CHAZAQ: schema.DAGESH_CHAZAQ ?? true,
       MAQAF: schema.MAQAF ?? "-",
@@ -2167,7 +2187,7 @@ export class SBL extends Schema {
     this.QAMATS = schema.QAMATS ?? "ā";
     this.HOLAM = schema.HOLAM ?? "ō";
     this.HOLAM_HASER = schema.HOLAM_HASER ?? "ō";
-    this.QUBUTS = schema.QUBUTS ?? "ū";
+    this.QUBUTS = schema.QUBUTS ?? "u";
     this.DAGESH = schema.DAGESH ?? "";
     this.DAGESH_CHAZAQ = schema.DAGESH_CHAZAQ ?? true;
     this.MAQAF = schema.MAQAF ?? "-";
@@ -2221,7 +2241,21 @@ export class SBL extends Schema {
     this.DIVINE_NAME = schema.DIVINE_NAME ?? "yhwh";
     this.DIVINE_NAME_ELOHIM = schema.DIVINE_NAME_ELOHIM ?? undefined;
     this.SYLLABLE_SEPARATOR = schema.SYLLABLE_SEPARATOR ?? undefined;
-    this.ADDITIONAL_FEATURES = schema.ADDITIONAL_FEATURES ?? undefined;
+    this.ADDITIONAL_FEATURES = schema.ADDITIONAL_FEATURES ?? [
+      {
+        FEATURE: "syllable",
+        HEBREW: /[\u{05B4}\u{05BB}]/u,
+        TRANSLITERATION: (syllable, heb, schema) => {
+          const hasMater = syllable.clusters.some((cluster) => cluster.isMater);
+          if (syllable.isAccented && !hasMater) {
+            const macron = "\u0304";
+            const output = syllable.hasVowelName("HIRIQ") ? schema["HIRIQ"] + macron : schema["QUBUTS"] + macron;
+            return syllable.text.replace(heb, output.normalize("NFC"));
+          }
+          return syllable.text;
+        }
+      }
+    ];
     this.STRESS_MARKER = schema.STRESS_MARKER ?? undefined;
     this.longVowels = schema.longVowels ?? true;
     this.qametsQatan = schema.qametsQatan ?? true;
diff --git a/test/transliterate.test.ts b/test/transliterate.test.ts
index 9054926..d2adade 100644
--- a/test/transliterate.test.ts
+++ b/test/transliterate.test.ts
@@ -82,13 +82,13 @@ describe("using default options", () => {
     describe("shewa", () => {
       test.each`
         description                                     | hebrew              | transliteration
-        ${"vocal shewa"}                                | ${"סְלִ֣ק"}         | ${"səliq"}
+        ${"vocal shewa"}                                | ${"שְׁמֹֽר"}        | ${"šəmōr"}
         ${"silent shewa"}                               | ${"סַלְכָ֣ה"}       | ${"salkâ"}
         ${"final shewa"}                                | ${"כָּ֣ךְ"}         | ${"kāk"}
         ${"two final shewas"}                           | ${"קָטַ֣לְתְּ"}     | ${"qāṭalt"}
         ${"omitted dagesh chazaq after article, yod"}   | ${"הַיְאֹ֗ר"}       | ${"hayəʾōr"}
         ${"omitted dagesh chazaq after article, mem"}   | ${"הַמְיַלֶּ֗דֶת"}  | ${"haməyalledet"}
-        ${"omitted dagesh chazaq after article, lamed"} | ${"הַלְוִיִּ֔ם"}    | ${"haləwiyyim"}
+        ${"omitted dagesh chazaq after article, lamed"} | ${"הַלְוִיִּ֔ם"}    | ${"haləwiyyīm"}
         ${"silent shewa and ligature consonant"}        | ${"אַשְׁכְּנַזִּי"} | ${"ʾaškənazzî"}
       `("$description", (inputs: Inputs) => {
         const { hebrew, transliteration } = inputs;
@@ -97,6 +97,19 @@ describe("using default options", () => {
     });
   });
 
+  describe("vowel features", () => {
+    test.each`
+      description       | hebrew             | transliteration
+      ${"short hiriq"}  | ${"מִנְחָה"}       | ${"minḥâ"}
+      ${"long hiriq"}   | ${"דָּוִ֑ד"}       | ${"dāwīd"}
+      ${"short qubuts"} | ${"וַיֻּגַּ֖ד"}    | ${"wayyuggad"}
+      ${"long qubuts"}  | ${"וַיֹּצִאֻ֥הוּ"} | ${"wayyōṣiʾūhû"}
+    `("$description", (inputs: Inputs) => {
+      const { hebrew, transliteration } = inputs;
+      expect(transliterate(hebrew)).toBe(transliteration);
+    });
+  });
+
   describe("mater features", () => {
     describe("typical", () => {
       test.each`
@@ -125,7 +138,7 @@ describe("using default options", () => {
         ${"consonantal vav with holem as vowel"}                               | ${"עָוֺ֖ן"}         | ${"ʿāwōn"}
         ${"consonantal vav with holem vav as vowel"}                           | ${"עָו֑וֹן"}        | ${"ʿāwôn"}
         ${"consonantal vav with holem, holem vav, and shureq (post biblical)"} | ${"עֲוֹנוֹתֵינוּ"}  | ${"ʿăwōnôtênû"}
-        ${"initial shureq"}                                                    | ${"וּמִן"}          | ${"ûmin"}
+        ${"initial shureq"}                                                    | ${"וּמִן"}          | ${"ûmīn"}
         ${"bgdkpt letter with mater"}                                          | ${"בִּיטוֹן"}       | ${"bîṭôn"}
       `("$description", (inputs: Inputs) => {
         const { hebrew, transliteration } = inputs;
@@ -411,7 +424,7 @@ describe("extending SBL schema for optional arguments", () => {
       ${"exclude never"}            | ${"בֹּ֖קֶר י֥וֹם אֶחָֽד׃"} | ${"bṓqer yốm ʾeḥā́d"}   | ${{ STRESS_MARKER: { location: "after-vowel", mark: "\u0301", exclude: "never" } }}
       ${"exclude single"}           | ${"בֹּ֖קֶר י֥וֹם אֶחָֽד׃"} | ${"bṓqer yôm ʾeḥā́d"}   | ${{ STRESS_MARKER: { location: "after-vowel", mark: "\u0301", exclude: "single" } }}
       ${"exclude final"}            | ${"בֹּ֖קֶר י֥וֹם אֶחָֽד׃"} | ${"bṓqer yôm ʾeḥād"}   | ${{ STRESS_MARKER: { location: "after-vowel", mark: "\u0301", exclude: "final" } }}
-      ${"ignore paseq"}             | ${"לְפָנַ֨י ׀ שֻׁלְחָ֗ן"}  | ${"ləpāˈnay  šūlˈḥān"} | ${{ STRESS_MARKER: { location: "before-syllable", mark: "ˈ" } }}
+      ${"ignore paseq"}             | ${"לְפָנַ֨י ׀ שֻׁלְחָ֗ן"}  | ${"ləpāˈnay  šulˈḥān"} | ${{ STRESS_MARKER: { location: "before-syllable", mark: "ˈ" } }}
     `("$description", (inputs: Inputs) => {
       const { hebrew, transliteration, options } = inputs;
       expect(transliterate(hebrew, options)).toBe(transliteration);