diff --git a/java/res/xml/key_styles_common.xml b/java/res/xml/key_styles_common.xml
index 8d01091..bd002fd 100644
--- a/java/res/xml/key_styles_common.xml
+++ b/java/res/xml/key_styles_common.xml
@@ -46,7 +46,7 @@
         >
             <key-style
                 latin:styleName="shiftKeyStyle"
-                latin:code="@integer/key_shift"
+                latin:code="!code/key_shift"
                 latin:keyIcon="iconShiftKeyShifted"
                 latin:keyActionFlags="noKeyPreview"
                 latin:backgroundType="stickyOff" />
@@ -56,7 +56,7 @@
         >
             <key-style
                 latin:styleName="shiftKeyStyle"
-                latin:code="@integer/key_shift"
+                latin:code="!code/key_shift"
                 latin:keyIcon="iconShiftKeyShifted"
                 latin:keyActionFlags="noKeyPreview"
                 latin:backgroundType="stickyOn" />
@@ -64,7 +64,7 @@
         <default>
             <key-style
                 latin:styleName="shiftKeyStyle"
-                latin:code="@integer/key_shift"
+                latin:code="!code/key_shift"
                 latin:keyIcon="iconShiftKey"
                 latin:keyActionFlags="noKeyPreview"
                 latin:backgroundType="stickyOff" />
@@ -72,7 +72,7 @@
     </switch>
     <key-style
         latin:styleName="deleteKeyStyle"
-        latin:code="@integer/key_delete"
+        latin:code="!code/key_delete"
         latin:keyIcon="iconDeleteKey"
         latin:keyActionFlags="isRepeatable|noKeyPreview"
         latin:backgroundType="functional" />
@@ -104,7 +104,7 @@
     </switch>
     <key-style
         latin:styleName="spaceKeyStyle"
-        latin:code="@integer/key_space"
+        latin:code="!code/key_space"
         latin:keyActionFlags="noKeyPreview|enableLongPress"
         latin:backgroundType="functional" />
     <!-- U+200C: ZERO WIDTH NON-JOINER
@@ -119,23 +119,23 @@
         latin:backgroundType="functional" />
     <key-style
         latin:styleName="shortcutKeyStyle"
-        latin:code="@integer/key_shortcut"
+        latin:code="!code/key_shortcut"
         latin:keyIcon="iconShortcutKey"
         latin:keyIconDisabled="iconDisabledShortcutKey"
         latin:keyLabelFlags="preserveCase"
         latin:keyActionFlags="noKeyPreview|altCodeWhileTyping"
-        latin:altCode="@integer/key_space"
+        latin:altCode="!code/key_space"
         latin:parentStyle="f1MoreKeysStyle" />
     <key-style
         latin:styleName="languageSwitchKeyStyle"
-        latin:code="@integer/key_language_switch"
+        latin:code="!code/key_language_switch"
         latin:keyIcon="iconLanguageSwitchKey"
         latin:keyActionFlags="noKeyPreview|altCodeWhileTyping|enableLongPress"
-        latin:altCode="@integer/key_space"
+        latin:altCode="!code/key_space"
         latin:backgroundType="functional" />
     <key-style
         latin:styleName="tabKeyStyle"
-        latin:code="@integer/key_tab"
+        latin:code="!code/key_tab"
         latin:keyIcon="iconTabKey"
         latin:keyIconPreview="iconPreviewTabKey"
         latin:backgroundType="functional" />
@@ -143,7 +143,7 @@
          laid out as normal letter key. -->
     <key-style
         latin:styleName="nonSpecialBackgroundTabKeyStyle"
-        latin:code="@integer/key_tab"
+        latin:code="!code/key_tab"
         latin:keyIcon="iconTabKey"
         latin:keyIconPreview="iconPreviewTabKey" />
     <switch>
@@ -156,7 +156,7 @@
         >
             <key-style
                 latin:styleName="toSymbolKeyStyle"
-                latin:code="@integer/key_switch_alpha_symbol"
+                latin:code="!code/key_switch_alpha_symbol"
                 latin:keyIcon="iconShortcutForLabel"
                 latin:keyLabel="@string/label_to_symbol_with_microphone_key"
                 latin:keyLabelFlags="withIconRight|preserveCase"
@@ -166,7 +166,7 @@
         <default>
             <key-style
                 latin:styleName="toSymbolKeyStyle"
-                latin:code="@integer/key_switch_alpha_symbol"
+                latin:code="!code/key_switch_alpha_symbol"
                 latin:keyLabel="@string/label_to_symbol_key"
                 latin:keyLabelFlags="preserveCase"
                 latin:keyActionFlags="noKeyPreview"
@@ -175,21 +175,21 @@
     </switch>
     <key-style
         latin:styleName="toAlphaKeyStyle"
-        latin:code="@integer/key_switch_alpha_symbol"
+        latin:code="!code/key_switch_alpha_symbol"
         latin:keyLabel="@string/label_to_alpha_key"
         latin:keyLabelFlags="preserveCase"
         latin:keyActionFlags="noKeyPreview"
         latin:backgroundType="functional" />
     <key-style
         latin:styleName="toMoreSymbolKeyStyle"
-        latin:code="@integer/key_shift"
+        latin:code="!code/key_shift"
         latin:keyLabel="@string/label_to_more_symbol_key"
         latin:keyLabelFlags="preserveCase"
         latin:keyActionFlags="noKeyPreview"
         latin:backgroundType="functional" />
     <key-style
         latin:styleName="backFromMoreSymbolKeyStyle"
-        latin:code="@integer/key_shift"
+        latin:code="!code/key_shift"
         latin:keyLabel="@string/label_to_symbol_key"
         latin:keyLabelFlags="preserveCase"
         latin:keyActionFlags="noKeyPreview"
diff --git a/java/res/xml/key_styles_enter.xml b/java/res/xml/key_styles_enter.xml
index e15a0be..49759c4 100644
--- a/java/res/xml/key_styles_enter.xml
+++ b/java/res/xml/key_styles_enter.xml
@@ -92,7 +92,7 @@
     <!-- Enter key style -->
     <key-style
         latin:styleName="defaultEnterKeyStyle"
-        latin:code="@integer/key_enter"
+        latin:code="!code/key_enter"
         latin:keyIcon="iconReturnKey"
         latin:keyLabelFlags="autoXScale|preserveCase"
         latin:keyActionFlags="noKeyPreview"
@@ -100,7 +100,7 @@
         latin:parentStyle="navigateMoreKeysStyle" />
     <key-style
         latin:styleName="defaultActionKeyStyle"
-        latin:code="@integer/key_action_enter"
+        latin:code="!code/key_action_enter"
         latin:keyIcon="iconUndefined"
         latin:backgroundType="action"
         latin:parentStyle="defaultEnterKeyStyle" />
diff --git a/java/res/xml/key_styles_number.xml b/java/res/xml/key_styles_number.xml
index 1fc2169..e1c5e5b 100644
--- a/java/res/xml/key_styles_number.xml
+++ b/java/res/xml/key_styles_number.xml
@@ -99,12 +99,12 @@
     <!-- Only for non-tablet device -->
     <key-style
         latin:styleName="numPhoneToSymbolKeyStyle"
-        latin:code="@integer/key_switch_alpha_symbol"
+        latin:code="!code/key_switch_alpha_symbol"
         latin:keyLabel="@string/label_to_phone_symbols_key"
         latin:parentStyle="numModeKeyStyle" />
     <key-style
         latin:styleName="numPhoneToNumericKeyStyle"
-        latin:code="@integer/key_switch_alpha_symbol"
+        latin:code="!code/key_switch_alpha_symbol"
         latin:keyLabel="@string/label_to_phone_numeric_key"
         latin:parentStyle="numModeKeyStyle" />
     <!-- U+002C: "," COMMA -->
@@ -127,7 +127,7 @@
         latin:parentStyle="tabKeyStyle" />
     <key-style
         latin:styleName="numSpaceKeyStyle"
-        latin:code="@integer/key_space"
+        latin:code="!code/key_space"
         latin:keyIcon="iconSpaceKeyForNumberLayout"
         latin:keyActionFlags="enableLongPress"
         latin:parentStyle="numKeyBaseStyle" />
diff --git a/java/res/xml/keys_curly_brackets.xml b/java/res/xml/keys_curly_brackets.xml
index d21a092..6a4b1a9 100644
--- a/java/res/xml/keys_curly_brackets.xml
+++ b/java/res/xml/keys_curly_brackets.xml
@@ -23,8 +23,8 @@
 >
     <Key
         latin:keyLabel="{"
-        latin:code="@integer/keycode_for_left_curly_bracket" />
+        latin:code="!code/key_left_curly_bracket" />
     <Key
         latin:keyLabel="}"
-        latin:code="@integer/keycode_for_right_curly_bracket" />
+        latin:code="!code/key_right_curly_bracket" />
 </merge>
diff --git a/java/res/xml/keys_less_greater.xml b/java/res/xml/keys_less_greater.xml
index 8961d9c..831f2dd 100644
--- a/java/res/xml/keys_less_greater.xml
+++ b/java/res/xml/keys_less_greater.xml
@@ -23,10 +23,10 @@
 >
     <Key
         latin:keyLabel="&lt;"
-        latin:code="@integer/keycode_for_less_than"
+        latin:code="!code/key_less_than"
         latin:moreKeys="@string/more_keys_for_less_than" />
     <Key
         latin:keyLabel="&gt;"
-        latin:code="@integer/keycode_for_greater_than"
+        latin:code="!code/key_greater_than"
         latin:moreKeys="@string/more_keys_for_greater_than" />
 </merge>
diff --git a/java/res/xml/keys_parentheses.xml b/java/res/xml/keys_parentheses.xml
index 6853bf1..502a84e 100644
--- a/java/res/xml/keys_parentheses.xml
+++ b/java/res/xml/keys_parentheses.xml
@@ -23,10 +23,10 @@
 >
     <Key
         latin:keyLabel="("
-        latin:code="@integer/keycode_for_left_parenthesis"
+        latin:code="!code/key_left_parenthesis"
         latin:moreKeys="@string/more_keys_for_left_parenthesis" />
     <Key
         latin:keyLabel=")"
-        latin:code="@integer/keycode_for_right_parenthesis"
+        latin:code="!code/key_right_parenthesis"
         latin:moreKeys="@string/more_keys_for_right_parenthesis" />
 </merge>
diff --git a/java/res/xml/keys_square_brackets.xml b/java/res/xml/keys_square_brackets.xml
index 44387c3..5c128fd 100644
--- a/java/res/xml/keys_square_brackets.xml
+++ b/java/res/xml/keys_square_brackets.xml
@@ -23,8 +23,8 @@
 >
     <Key
         latin:keyLabel="["
-        latin:code="@integer/keycode_for_left_square_bracket" />
+        latin:code="!code/key_left_square_bracket" />
     <Key
         latin:keyLabel="]"
-        latin:code="@integer/keycode_for_right_square_bracket" />
+        latin:code="!code/key_right_square_bracket" />
 </merge>