diff --git a/tool/options.js b/tool/options.js
index b601891..ef5ca69 100644
--- a/tool/options.js
+++ b/tool/options.js
@@ -1,7 +1,8 @@
 // Options picker
 import { Tool } from '../tool.js';
 import {
-  MODE_PAN_VIEW,
+  DISPLAY_ACCELERATION_VECTORS,
+  DISPLAY_VELOCITY_VECTORS,
   PAUSE_DURING_CREATION,
   PAUSE_DURING_SELECTION,
 } from '../config.js';
@@ -12,6 +13,11 @@ export class Options extends Tool {
     items: [
       { type: 'boolean', name: 'creation', title: 'Creation', default: PAUSE_DURING_CREATION },
       { type: 'boolean', name: 'selection', title: 'Selection', default: PAUSE_DURING_SELECTION },
+    ]}, {
+    type: 'group', name: 'show', title: 'Show Vectors',
+    items: [
+      { type: 'boolean', name: 'velocity', title: 'Velocity', default: DISPLAY_VELOCITY_VECTORS },
+      { type: 'boolean', name: 'acceleration', title: 'Acceleration', default: DISPLAY_ACCELERATION_VECTORS },
     ]
   }];
 
@@ -36,12 +42,11 @@ export class Options extends Tool {
         button.innerHTML = `<h4>${item.title}</h4>`;
         this.setOption(path, item.default);
         button.style.opacity = this.values[path] ? '100%' : '50%';
-        button.addEventListener('click', (e) => {
+        button.addEventListener('click', () => {
             this.setOption(path, !this.getOption(path));
             button.style.opacity = this.values[path] ? '100%' : '50%';
         });
         return button;
-        break;
       }
       default:
         throw new Error('unknown option type');