diff --git a/src/composables/states/appCanvas/align/alignBoxSelectedState.ts b/src/composables/states/appCanvas/align/alignBoxSelectedState.ts
index 1ee00ff0..881a4a73 100644
--- a/src/composables/states/appCanvas/align/alignBoxSelectedState.ts
+++ b/src/composables/states/appCanvas/align/alignBoxSelectedState.ts
@@ -50,7 +50,7 @@ export function newAlignBoxSelectedState(): AppCanvasState {
       targetId = ctx.getLastSelectedShapeId()!;
 
       ctx.showFloatMenu();
-      ctx.setCommandExams(getCommonCommandExams());
+      ctx.setCommandExams(getCommonCommandExams(ctx));
       initHandler(ctx);
     },
     onEnd: (ctx) => {
diff --git a/src/composables/states/appCanvas/board/boardEntitySelectedState.ts b/src/composables/states/appCanvas/board/boardEntitySelectedState.ts
index 6ebc5209..8ded296d 100644
--- a/src/composables/states/appCanvas/board/boardEntitySelectedState.ts
+++ b/src/composables/states/appCanvas/board/boardEntitySelectedState.ts
@@ -73,7 +73,7 @@ export function newBoardEntitySelectedState(): AppCanvasState {
       });
 
       ctx.showFloatMenu();
-      ctx.setCommandExams(getCommonCommandExams());
+      ctx.setCommandExams(getCommonCommandExams(ctx));
       initHandler(ctx);
     },
     onEnd: (ctx) => {
diff --git a/src/composables/states/appCanvas/commandExams.ts b/src/composables/states/appCanvas/commandExams.ts
index 44c2c8d9..0dbffb7e 100644
--- a/src/composables/states/appCanvas/commandExams.ts
+++ b/src/composables/states/appCanvas/commandExams.ts
@@ -28,4 +28,7 @@ export const COMMAND_EXAM_SRC = {
 
   GROUP: { command: `${getCtrlOrMetaStr()} + g`, title: "Group" },
   UNGROUP: { command: `${getCtrlOrMetaStr()} + G`, title: "Ungroup" },
+
+  SELECT_PARENT: { command: "p", title: "Select parent" },
+  SELECT_CHILD: { command: "c", title: "Select child" },
 } satisfies { [key: string]: CommandExam };
diff --git a/src/composables/states/appCanvas/commons.ts b/src/composables/states/appCanvas/commons.ts
index 419056d1..ceda4de6 100644
--- a/src/composables/states/appCanvas/commons.ts
+++ b/src/composables/states/appCanvas/commons.ts
@@ -38,6 +38,7 @@ import { newSingleSelectedByPointerOnState } from "./singleSelectedByPointerOnSt
 import { newMovingHubState } from "./movingHubState";
 import { getPatchByLayouts } from "../../shapeLayoutHandler";
 import { ShapeSelectionScope } from "../../../shapes/core";
+import { CommandExam } from "../types";
 
 type AcceptableEvent = "Break" | "DroppingNewShape" | "LineReady" | "TextReady";
 
@@ -90,6 +91,24 @@ export function handleCommonShortcut(
       }
       return newSelectionHubState;
     }
+    case "p": {
+      const shapeComposite = ctx.getShapeComposite();
+      const current = shapeComposite.shapeMap[ctx.getLastSelectedShapeId() ?? ""];
+      if (current?.parentId && shapeComposite.shapeMap[current.parentId]) {
+        ctx.selectShape(current.parentId);
+        return newSelectionHubState;
+      }
+      return;
+    }
+    case "c": {
+      const shapeComposite = ctx.getShapeComposite();
+      const currentNode = shapeComposite.mergedShapeTreeMap[ctx.getLastSelectedShapeId() ?? ""];
+      if (currentNode && currentNode.children.length > 0 && shapeComposite.shapeMap[currentNode.children[0].id]) {
+        ctx.selectShape(currentNode.children[0].id);
+        return newSelectionHubState;
+      }
+      return;
+    }
     case "g":
       if (event.data.ctrl) {
         event.data.prevent?.();
@@ -168,8 +187,30 @@ const COMMON_COMMAND_EXAMS = [
   COMMAND_EXAM_SRC.PAN_CANVAS,
   COMMAND_EXAM_SRC.RESET_VIEWPORT,
 ];
-export function getCommonCommandExams() {
-  return COMMON_COMMAND_EXAMS;
+export function getCommonCommandExams(ctx: AppCanvasStateContext): CommandExam[] {
+  const shapeComposite = ctx.getShapeComposite();
+  const shapeMap = shapeComposite.shapeMap;
+  const current = shapeMap[ctx.getLastSelectedShapeId() ?? ""];
+  if (!current) return COMMON_COMMAND_EXAMS;
+
+  const extra: CommandExam[] = [];
+  if (shapeComposite.shapeMap[current.parentId ?? ""]) {
+    extra.push(COMMAND_EXAM_SRC.SELECT_PARENT);
+  }
+  const currentNode = shapeComposite.mergedShapeTreeMap[current.id];
+  if (currentNode.children.length > 0 && shapeMap[currentNode.children[0].id]) {
+    extra.push(COMMAND_EXAM_SRC.SELECT_CHILD);
+  }
+
+  const selectedIds = Object.keys(ctx.getSelectedShapeIdMap());
+  if (canGroupShapes(shapeComposite, selectedIds)) {
+    extra.push(COMMAND_EXAM_SRC.GROUP);
+  }
+  if (selectedIds.some((id) => shapeMap[id] && isGroupShape(shapeMap[id]))) {
+    extra.push(COMMAND_EXAM_SRC.UNGROUP);
+  }
+
+  return extra.length > 0 ? [...extra, ...COMMON_COMMAND_EXAMS] : COMMON_COMMAND_EXAMS;
 }
 
 export function handleCommonTextStyle(
diff --git a/src/composables/states/appCanvas/defaultState.ts b/src/composables/states/appCanvas/defaultState.ts
index 253d0326..23dacdac 100644
--- a/src/composables/states/appCanvas/defaultState.ts
+++ b/src/composables/states/appCanvas/defaultState.ts
@@ -20,7 +20,7 @@ export function newDefaultState(): AppCanvasState {
 const state: AppCanvasState = {
   getLabel: () => "Default",
   onStart(ctx) {
-    ctx.setCommandExams(getCommonCommandExams());
+    ctx.setCommandExams(getCommonCommandExams(ctx));
   },
   onEnd(ctx) {
     ctx.setCommandExams();
diff --git a/src/composables/states/appCanvas/lines/lineLabelSelectedState.ts b/src/composables/states/appCanvas/lines/lineLabelSelectedState.ts
index 7a82f7fc..7516e51f 100644
--- a/src/composables/states/appCanvas/lines/lineLabelSelectedState.ts
+++ b/src/composables/states/appCanvas/lines/lineLabelSelectedState.ts
@@ -36,7 +36,7 @@ export function newLineLabelSelectedState(option?: Option): AppCanvasState {
   return {
     getLabel: () => "LineLabelSelected",
     onStart: (ctx) => {
-      ctx.setCommandExams(getCommonCommandExams());
+      ctx.setCommandExams(getCommonCommandExams(ctx));
 
       const shapeComposite = ctx.getShapeComposite();
       const shapeMap = shapeComposite.shapeMap;
diff --git a/src/composables/states/appCanvas/lines/lineSelectedState.ts b/src/composables/states/appCanvas/lines/lineSelectedState.ts
index 460a5c7f..fa5bcbba 100644
--- a/src/composables/states/appCanvas/lines/lineSelectedState.ts
+++ b/src/composables/states/appCanvas/lines/lineSelectedState.ts
@@ -35,7 +35,7 @@ export function newLineSelectedState(): AppCanvasState {
       ctx.showFloatMenu();
       lineShape = ctx.getShapeComposite().shapeMap[ctx.getLastSelectedShapeId() ?? ""] as LineShape;
       lineBounding = newLineBounding({ lineShape, scale: ctx.getScale(), styleScheme: ctx.getStyleScheme() });
-      ctx.setCommandExams([COMMAND_EXAM_SRC.DELETE_INER_VERTX, ...getCommonCommandExams()]);
+      ctx.setCommandExams([COMMAND_EXAM_SRC.DELETE_INER_VERTX, ...getCommonCommandExams(ctx)]);
     },
     onEnd: (ctx) => {
       ctx.hideFloatMenu();
diff --git a/src/composables/states/appCanvas/multipleSelectedState.ts b/src/composables/states/appCanvas/multipleSelectedState.ts
index 43f529ac..1baa0e77 100644
--- a/src/composables/states/appCanvas/multipleSelectedState.ts
+++ b/src/composables/states/appCanvas/multipleSelectedState.ts
@@ -21,9 +21,7 @@ import { newRectangleSelectingState } from "./ractangleSelectingState";
 import { newDuplicatingShapesState } from "./duplicatingShapesState";
 import { newSelectionHubState } from "./selectionHubState";
 import { CONTEXT_MENU_ITEM_SRC, handleContextItemEvent } from "./contextMenuItems";
-import { COMMAND_EXAM_SRC } from "./commandExams";
-import { canGroupShapes, findBetterShapeAt, getRotatedTargetBounds } from "../../shapeComposite";
-import { isGroupShape } from "../../../shapes/group";
+import { findBetterShapeAt, getRotatedTargetBounds } from "../../shapeComposite";
 import { newMovingHubState } from "./movingHubState";
 import { ShapeSelectionScope, isSameShapeSelectionScope } from "../../../shapes/core";
 
@@ -73,13 +71,7 @@ export function newMultipleSelectedState(option?: Option): AppCanvasState {
       }
 
       ctx.showFloatMenu();
-      if (selectedIds.some((id) => isGroupShape(shapeMap[id]))) {
-        ctx.setCommandExams([COMMAND_EXAM_SRC.GROUP, COMMAND_EXAM_SRC.UNGROUP, ...getCommonCommandExams()]);
-      } else if (canGroupShapes(shapeComposite, selectedIds)) {
-        ctx.setCommandExams([COMMAND_EXAM_SRC.GROUP, ...getCommonCommandExams()]);
-      } else {
-        ctx.setCommandExams(getCommonCommandExams());
-      }
+      ctx.setCommandExams(getCommonCommandExams(ctx));
 
       if (option?.boundingBox) {
         // Recalculate the bounding because shapes aren't always transformed along with the bounding box.
diff --git a/src/composables/states/appCanvas/singleSelectedState.ts b/src/composables/states/appCanvas/singleSelectedState.ts
index 0402874f..2e2ed68f 100644
--- a/src/composables/states/appCanvas/singleSelectedState.ts
+++ b/src/composables/states/appCanvas/singleSelectedState.ts
@@ -21,7 +21,6 @@ import { getOuterRectangle } from "okageo";
 import { newSelectionHubState } from "./selectionHubState";
 import { CONTEXT_MENU_ITEM_SRC, handleContextItemEvent } from "./contextMenuItems";
 import { isGroupShape } from "../../../shapes/group";
-import { COMMAND_EXAM_SRC } from "./commandExams";
 import { findBetterShapeAt } from "../../shapeComposite";
 import { ShapeSelectionScope } from "../../../shapes/core";
 
@@ -45,11 +44,7 @@ export function newSingleSelectedState(): AppCanvasState {
       selectionScope = shapeComposite.getSelectionScope(shape);
       isGroupShapeSelected = isGroupShape(shape);
 
-      if (isGroupShapeSelected) {
-        ctx.setCommandExams([COMMAND_EXAM_SRC.UNGROUP, ...getCommonCommandExams()]);
-      } else {
-        ctx.setCommandExams(getCommonCommandExams());
-      }
+      ctx.setCommandExams(getCommonCommandExams(ctx));
 
       boundingBox = newBoundingBox({
         path: shapeComposite.getLocalRectPolygon(shape),
diff --git a/src/utils/tree.ts b/src/utils/tree.ts
index 0c1dede5..8001e8b0 100644
--- a/src/utils/tree.ts
+++ b/src/utils/tree.ts
@@ -40,13 +40,13 @@ function getChildNodes<T extends TreeFlatNode>(parentMap: { [id: string]: T[] },
 /**
  * Depth first ordered
  */
-export function walkTree(treeNodes: TreeNode[], fn: (node: TreeNode) => void) {
-  treeNodes.forEach((n) => walkTreeStep(n, fn));
+export function walkTree(treeNodes: TreeNode[], fn: (node: TreeNode, i: number) => void) {
+  treeNodes.forEach((n, i) => walkTreeStep(n, fn, i));
 }
 
-function walkTreeStep(node: TreeNode, fn: (node: TreeNode) => void) {
-  fn(node);
-  node.children.forEach((c) => walkTreeStep(c, fn));
+function walkTreeStep(node: TreeNode, fn: (node: TreeNode, i: number) => void, i: number) {
+  fn(node, i);
+  node.children.forEach((c, j) => walkTreeStep(c, fn, j));
 }
 
 /**