diff --git a/web/history.md b/web/history.md
index 5e2d843a76..9bb213a04a 100644
--- a/web/history.md
+++ b/web/history.md
@@ -1,5 +1,8 @@
 # KeymanWeb Version History
 
+## 2018-05-08 10.0.90 beta
+* Fixes support for Keyman-language 'beep' statements as part of keyboard stores. (#733)
+
 ## 2018-05-07 10.0.89 beta
 * Fixes an issue with case sensitive virtual keys used by some Keyman keyboards. (#162)
 
diff --git a/web/source/kmwcallback.ts b/web/source/kmwcallback.ts
index 1466efe325..a77cbfa7f6 100644
--- a/web/source/kmwcallback.ts
+++ b/web/source/kmwcallback.ts
@@ -13,14 +13,13 @@ namespace com.keyman {
   * No constructors or methods since keyboards will not utilize the same backing prototype, and
   * property names are shorthanded to promote minification.
   */
-
   type PlainKeyboardStore = string;
 
-  // TODO:  Implement the new 'store object-orientation proposal.
-  export type KeyboardStoreElement = (string|{'d': number});
+  export type KeyboardStoreElement = (string|StoreNonCharEntry);
   export type ComplexKeyboardStore = KeyboardStoreElement[]; 
 
   type KeyboardStore = PlainKeyboardStore | ComplexKeyboardStore;
+
   type RuleChar = string;
 
   class RuleDeadkey {
@@ -83,9 +82,17 @@ namespace com.keyman {
     ['t']: 'n';
   }
 
+  class StoreBeep {
+    /** Discriminant field - 'b' for `beep`
+     */
+    ['t']: 'b';
+  }
+
   type ContextNonCharEntry = RuleDeadkey | ContextAny | RuleIndex | ContextEx | ContextNul;
   type ContextEntry = RuleChar | ContextNonCharEntry;
 
+  type StoreNonCharEntry = RuleDeadkey | StoreBeep;
+
   /**
    * Cache of context storing and retrieving return values from KC
    * Must be reset prior to each keystroke and after any text changes
@@ -470,7 +477,14 @@ namespace com.keyman {
               }
               break;
             case 'a':
-              var lookup = (typeof(context[i]) == 'string' ? context[i] as string : {'d': context[i] as number});
+              var lookup: KeyboardStoreElement;
+
+              if(typeof context[i] == 'string') {
+                lookup = context[i] as string;
+              } else {
+                lookup = {'t': 'd', 'd': context[i] as number};
+              }
+
               var result = this.any(i, lookup, r.a);
 
               if(!r.n) { // If it's a standard 'any'...
@@ -486,7 +500,8 @@ namespace com.keyman {
               }
               break;
             case 'i':
-              var ch = this._Index(r.i, r.o);
+              // The context will never hold a 'beep.'
+              var ch = this._Index(r.i, r.o) as string | RuleDeadkey;
 
               if(ch !== undefined && (typeof(ch) == 'string' ? ch : ch.d) !== context[i]) {
                 mismatch = true;
@@ -767,11 +782,29 @@ namespace com.keyman {
     indexOutput(Pdn: number, Ps: KeyboardStore, Pn: number, Pelem: HTMLElement): void {
       this.resetContextCache();
 
+      var assertNever = function(x: never): never {
+        // Could be accessed by improperly handwritten calls to `fullContextMatch`.
+        throw new Error("Unexpected object in fullContextMatch specification: " + x);
+      }
+
       var indexChar = this._Index(Ps, Pn);
       if(indexChar !== "") {
         if(typeof indexChar == 'string' ) {
           this.output(Pdn,Pelem,indexChar);  //I3319
-        } else {
+        } else if(indexChar['t']) {
+          var storeEntry = indexChar as StoreNonCharEntry;
+
+          switch(storeEntry.t) {
+            case 'b': // Beep commands may appear within stores.
+              this.beep(Pelem);
+              break;
+            case 'd':
+              this.deadkeyOutput(Pdn, Pelem, indexChar['d']);
+              break;
+            default:
+              assertNever(storeEntry);
+          }
+        } else { // For keyboards developed during 10.0's alpha phase - t:'d' was assumed.
           this.deadkeyOutput(Pdn, Pelem, indexChar['d']);
         }
       } 
diff --git a/windows/src/developer/TIKE/compile/CompileKeymanWeb.pas b/windows/src/developer/TIKE/compile/CompileKeymanWeb.pas
index b10ba0e035..d45c8ca344 100644
--- a/windows/src/developer/TIKE/compile/CompileKeymanWeb.pas
+++ b/windows/src/developer/TIKE/compile/CompileKeymanWeb.pas
@@ -1111,7 +1111,11 @@ begin
       begin
         if rec.Code = CODE_DEADKEY then
         begin
-          Result := Result + Format('{d:%d}', [rec.Deadkey.DeadKey]);
+          Result := Result + Format('{t:''d'',d:%d}', [rec.Deadkey.DeadKey]);
+        end
+        else if rec.Code = CODE_BEEP then
+        begin
+          Result := Result + '{t:''b''}'
         end
         else //if rec.Code = CODE_EXTENDED then
         begin
diff --git a/windows/src/developer/history.md b/windows/src/developer/history.md
index d37ac97d18..f1ad063aa8 100644
--- a/windows/src/developer/history.md
+++ b/windows/src/developer/history.md
@@ -1,5 +1,8 @@
 # Keyman Developer Version History
 
+## 2018-05-08 10.0.1082.0 beta
+* Fixes support for 'beep' statements in keyboard stores when compiling for web or mobile targets (#733)
+
 ## 2018-05-03 10.0.1076.0 beta
 * Restrict modifier options to a small set by default in touch layout editor (#810)
 * Touch layout editor no longer leaves broken JSON when deleting or modifying some keys (#811)