diff --git a/capacitor-lab-basics_en.html b/capacitor-lab-basics_en.html
index 42ac59aa..81509a11 100644
--- a/capacitor-lab-basics_en.html
+++ b/capacitor-lab-basics_en.html
@@ -93,6 +93,7 @@
   let preloads = [
     '../joist/js/splash.js',
     '../sherpa/lib/jquery-2.1.0.js',
+    '../sherpa/lib/jsondiffpatch-v0.3.11.umd.js',
     '../sherpa/lib/lodash-4.17.4.js',
     '../sherpa/lib/FileSaver-b8054a2.js',
     '../sherpa/lib/himalaya-1.1.0.js',
diff --git a/js/capacitorLabBasicsStrings.ts b/js/capacitorLabBasicsStrings.ts
index f8d45a13..ee162d46 100644
--- a/js/capacitorLabBasicsStrings.ts
+++ b/js/capacitorLabBasicsStrings.ts
@@ -5,36 +5,59 @@
  */
 /* eslint-disable */
 import getStringModule from '../../chipper/js/getStringModule.js';
+import TReadOnlyProperty from '../../axon/js/TReadOnlyProperty.js';
 import capacitorLabBasics from './capacitorLabBasics.js';
 
 type StringsType = {
   'capacitance': string;
+  'capacitanceProperty': TReadOnlyProperty<string>;
   'conventional': string;
+  'conventionalProperty': TReadOnlyProperty<string>;
   'currentDirection': string;
+  'currentDirectionProperty': TReadOnlyProperty<string>;
   'barGraphs': string;
+  'barGraphsProperty': TReadOnlyProperty<string>;
   'capacitor-lab-basics': {
     'title': string;
+    'titleProperty': TReadOnlyProperty<string>;
   };
   'screen': {
     'capacitance': string;
+    'capacitanceProperty': TReadOnlyProperty<string>;
     'lightBulb': string;
+    'lightBulbProperty': TReadOnlyProperty<string>;
   };
   'electricField': string;
+  'electricFieldProperty': TReadOnlyProperty<string>;
   'electrons': string;
+  'electronsProperty': TReadOnlyProperty<string>;
   'plateArea': string;
+  'plateAreaProperty': TReadOnlyProperty<string>;
   'topPlateCharge': string;
+  'topPlateChargeProperty': TReadOnlyProperty<string>;
   'plateCharges': string;
+  'plateChargesProperty': TReadOnlyProperty<string>;
   'separation': string;
+  'separationProperty': TReadOnlyProperty<string>;
   'storedEnergy': string;
+  'storedEnergyProperty': TReadOnlyProperty<string>;
   'voltage': string;
+  'voltageProperty': TReadOnlyProperty<string>;
   'voltsPattern': string;
+  'voltsPatternProperty': TReadOnlyProperty<string>;
   'millimetersPattern': string;
+  'millimetersPatternProperty': TReadOnlyProperty<string>;
   'millimetersSquaredPattern': string;
+  'millimetersSquaredPatternProperty': TReadOnlyProperty<string>;
   'picoJoulesPattern': string;
+  'picoJoulesPatternProperty': TReadOnlyProperty<string>;
   'picoFaradsPattern': string;
+  'picoFaradsPatternProperty': TReadOnlyProperty<string>;
   'picoCoulombsPattern': string;
+  'picoCoulombsPatternProperty': TReadOnlyProperty<string>;
   'volts': {
     'unknown': string;
+    'unknownProperty': TReadOnlyProperty<string>;
   }
 };