diff --git a/README.md b/README.md
index 267c07f..7dcb184 100644
--- a/README.md
+++ b/README.md
@@ -264,7 +264,7 @@ Extern Projects & Plugins:
   - [Latin Charset Encoder Presets](doc/encoder.md)
   - [Language Specific Preset](doc/encoder.md)
   - [Custom Encoder](doc/encoder.md#custom-encoder)
-- [Non-Blocking Runtime Balancer (Async)](doc/async.md)
+- [Async Non-Blocking Runtime Balancer](doc/async.md)
 - [Worker Indexes](doc/worker.md)
   - [Worker Index Options](doc/worker.md#worker-index-options)
 - [Resolver (Complex Queries)](doc/resolver.md)
@@ -286,10 +286,10 @@ Extern Projects & Plugins:
   - [Clickhouse](doc/persistent-clickhouse.md)
 - [Custom Score Function](doc/customization.md)
 - [Custom Builds](doc/custom-builds.md)
-- [Extended Keystores (In-Memory)](doc/keystore.md)
+- [Extended Keystores (In-Memory Index)](doc/keystore.md)
 - [Best Practices](#best-practices)
   - [Page-Load / Fast-Boot](#page-load--fast-boot)
-  - [Use numeric IDs](#use-numeric-ids)
+  - [Prefer numeric typed IDs](#use-numeric-ids)
 
 ## Load Library (Node.js, ESM, Legacy Browser)
 
diff --git a/index.d.ts b/index.d.ts
index d82a535..a1859b9 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -382,7 +382,7 @@ declare module "flexsearch" {
      * * Document options: https://github.com/nextapps-de/flexsearch#document-options
      */
 
-    type WorkerType = boolean | WorkerURL | WorkerPath
+    type WorkerType = boolean | WorkerURL | WorkerPath;
 
     type DocumentOptions<
         D extends DocumentData = DocumentData,
@@ -415,6 +415,7 @@ declare module "flexsearch" {
         doc: D | null;
         field?: FieldName[];
         tag?: FieldName[];
+        highlight?: {[field: FieldName]: string};
     }>;
 
     type DocumentSearchResults<
@@ -451,10 +452,10 @@ declare module "flexsearch" {
         E extends boolean = false,
         M extends boolean = false
     > = SearchOptions<R> & {
-        tag?: Object | Array<Object>;
-        field?: Array<DocumentSearchOptions<D, R, E, M>> | DocumentSearchOptions<D, R, E, M> | string[] | string;
-        index?: Array<DocumentSearchOptions<D, R, E, M>> | DocumentSearchOptions<D, R, E, M> | string[] | string;
-        pluck?: FieldName | DocumentSearchOptions<D, R, E, M>;
+        tag?: {[field: FieldName]: string} | Array<{[field: FieldName]: string}>;
+        field?: Array<DocumentSearchOptions<D, R, E, M>> | DocumentSearchOptions<D, R, E, M> | FieldName[] | FieldName;
+        index?: Array<DocumentSearchOptions<D, R, E, M>> | DocumentSearchOptions<D, R, E, M> | FieldName[] | FieldName;
+        pluck?: FieldName | DocumentSearchOptions<D, R, E, false>;
         highlight?: HighlightOptions | TemplateResultHighlighting;
         enrich?: E;
         merge?: M;