diff --git a/src/common/webview-context.ts b/src/common/webview-context.ts
index 6ae0afc..3e85652 100644
--- a/src/common/webview-context.ts
+++ b/src/common/webview-context.ts
@@ -15,7 +15,7 @@
  ********************************************************************************/
 
 import { WebviewIdMessageParticipant } from 'vscode-messenger-common';
-import { VariableMetadata } from './memory-range';
+import { Endianness, VariableMetadata } from './memory-range';
 import { ReadMemoryArguments } from './messaging';
 
 export interface WebviewContext {
@@ -24,6 +24,8 @@ export interface WebviewContext {
     showAsciiColumn: boolean
     showVariablesColumn: boolean,
     showRadixPrefix: boolean,
+    endianness: Endianness,
+    bytesPerMau: number,
     activeReadArguments: Required<ReadMemoryArguments>
 }
 
diff --git a/src/webview/columns/data-column.tsx b/src/webview/columns/data-column.tsx
index b84dc5e..42c7546 100644
--- a/src/webview/columns/data-column.tsx
+++ b/src/webview/columns/data-column.tsx
@@ -23,6 +23,7 @@ import { writeMemoryType } from '../../common/messaging';
 import type { MemorySizeOptions } from '../components/memory-table';
 import { decorationService } from '../decorations/decoration-service';
 import { Disposable, FullNodeAttributes } from '../utils/view-types';
+import { createGroupVscodeContext } from '../utils/vscode-contexts';
 import { characterWidthInContainer, elementInnerWidth } from '../utils/window';
 import { messenger } from '../view-messenger';
 import { ColumnContribution, TableRenderOptions } from './column-contribution-service';
@@ -90,6 +91,7 @@ export class EditableDataColumnRow extends React.Component<EditableDataColumnRow
             style={style}
             key={startAddress.toString(16)}
             onDoubleClick={this.setGroupEdit}
+            {...createGroupVscodeContext(startAddress, toOffset(startAddress, endAddress, this.props.options.bytesPerMau * 8))}
         >
             {maus}
         </span>;
diff --git a/src/webview/components/memory-widget.tsx b/src/webview/components/memory-widget.tsx
index dcf09d4..2ddeaec 100644
--- a/src/webview/components/memory-widget.tsx
+++ b/src/webview/components/memory-widget.tsx
@@ -66,12 +66,15 @@ export class MemoryWidget extends React.Component<MemoryWidgetProps, MemoryWidge
 
     protected createVscodeContext(): VscodeContext {
         const visibleColumns = this.props.columns.filter(candidate => candidate.active).map(column => column.contribution.id);
+        const { messageParticipant, showRadixPrefix, endianness, bytesPerMau, activeReadArguments } = this.props;
         return createAppVscodeContext({
-            messageParticipant: this.props.messageParticipant,
-            showRadixPrefix: this.props.showRadixPrefix,
+            messageParticipant,
+            showRadixPrefix,
             showAsciiColumn: visibleColumns.includes('ascii'),
             showVariablesColumn: visibleColumns.includes('variables'),
-            activeReadArguments: this.props.activeReadArguments
+            endianness,
+            bytesPerMau,
+            activeReadArguments
         });
 
     }
diff --git a/src/webview/utils/vscode-contexts.ts b/src/webview/utils/vscode-contexts.ts
index dbbd54d..aa56e3c 100644
--- a/src/webview/utils/vscode-contexts.ts
+++ b/src/webview/utils/vscode-contexts.ts
@@ -28,7 +28,7 @@ export interface VscodeContext {
 export type WebviewSection = 'optionsWidget' | 'advancedOptionsOverlay' | 'memoryTable';
 
 export function createVscodeContext<C extends {}>(context: C): VscodeContext {
-    return { 'data-vscode-context': JSON.stringify(includeFlatKeys(context)) };
+    return { 'data-vscode-context': JSON.stringify(includeFlatKeys(context), replacerForBigInt) };
 }
 
 function includeFlatKeys(src: object): Record<string, unknown> {
@@ -60,8 +60,19 @@ export function createAppVscodeContext(context: Omit<WebviewContext, 'webviewSec
     return createVscodeContext({ ...context, webviewSection: 'app', preventDefaultContextMenuItems: true });
 }
 
+export function createGroupVscodeContext(startAddress: BigInt, length: number): VscodeContext {
+    return createVscodeContext({ memoryData: { group: { startAddress, length } } });
+}
+
 export function createVariableVscodeContext(variable: BigIntVariableRange): VscodeContext {
     const { name, type, value, isPointer } = variable;
     return createVscodeContext({ variable: { name, type, value, isPointer } });
 }
 
+function replacerForBigInt(_: string, value: unknown): unknown {
+    if (typeof value === 'bigint') {
+        return `0x${value.toString(16)}`;
+    }
+    return value;
+}
+