diff --git a/suite/common/mac/platformCommunicatorOverlay.xul b/suite/common/mac/platformCommunicatorOverlay.xul
index 206aad1d3b62..f125c8d7af46 100644
--- a/suite/common/mac/platformCommunicatorOverlay.xul
+++ b/suite/common/mac/platformCommunicatorOverlay.xul
@@ -3,8 +3,8 @@
 
 <!DOCTYPE overlay [
 
-<!ENTITY % platformCommunicationDTD SYSTEM "chrome://communicator-platform/locale/platformCommunicatorOverlay.dtd">
-%platformCommunicationDTD;
+<!ENTITY % platformCommunicatorDTD SYSTEM "chrome://communicator-platform/locale/platformCommunicatorOverlay.dtd">
+%platformCommunicatorDTD;
 <!ENTITY % utilityDTD SYSTEM "chrome://communicator/locale/utilityOverlay.dtd">
 %utilityDTD;
 
diff --git a/suite/common/unix/platformCommunicatorOverlay.xul b/suite/common/unix/platformCommunicatorOverlay.xul
index a5879a35f966..b9398c020ffe 100644
--- a/suite/common/unix/platformCommunicatorOverlay.xul
+++ b/suite/common/unix/platformCommunicatorOverlay.xul
@@ -3,8 +3,8 @@
 
 <!DOCTYPE overlay [
 
-<!ENTITY % platformCommunicationDTD SYSTEM "chrome://communicator-platform/locale/platformCommunicatorOverlay.dtd">
-%platformCommunicationDTD;
+<!ENTITY % platformCommunicatorDTD SYSTEM "chrome://communicator-platform/locale/platformCommunicatorOverlay.dtd">
+%platformCommunicatorDTD;
 <!ENTITY % utilityDTD SYSTEM "chrome://communicator/locale/utilityOverlay.dtd">
 %utilityDTD;
 
diff --git a/suite/common/win/platformCommunicatorOverlay.xul b/suite/common/win/platformCommunicatorOverlay.xul
index 88ab46505aec..255485338b07 100644
--- a/suite/common/win/platformCommunicatorOverlay.xul
+++ b/suite/common/win/platformCommunicatorOverlay.xul
@@ -3,8 +3,8 @@
 
 <!DOCTYPE overlay [
 
-<!ENTITY % platformCommunicationDTD SYSTEM "chrome://communicator-platform/locale/platformCommunicatorOverlay.dtd">
-%platformCommunicationDTD;
+<!ENTITY % platformCommunicatorDTD SYSTEM "chrome://communicator-platform/locale/platformCommunicatorOverlay.dtd">
+%platformCommunicatorDTD;
 <!ENTITY % utilityDTD SYSTEM "chrome://communicator/locale/utilityOverlay.dtd">
 %utilityDTD;
 
diff --git a/suite/locales/en-US/chrome/common/mac/platformCommunicatorOverlay.dtd b/suite/locales/en-US/chrome/common/mac/platformCommunicatorOverlay.dtd
index 9176d1919fc0..6df2fdaeb27c 100644
--- a/suite/locales/en-US/chrome/common/mac/platformCommunicatorOverlay.dtd
+++ b/suite/locales/en-US/chrome/common/mac/platformCommunicatorOverlay.dtd
@@ -23,3 +23,7 @@
 <!ENTITY minimizeWindowCmd.label    "Minimize">
 <!ENTITY minimizeWindowCmd.key      "M">
 <!ENTITY zoomWindowCmd.label        "Zoom">
+
+<!-- Help viewer -->
+<!ENTITY openHelpCmd.label          "&brandShortName; Help">
+<!ENTITY openHelpCmd.accesskey      "H">
diff --git a/suite/locales/en-US/chrome/common/unix/platformCommunicatorOverlay.dtd b/suite/locales/en-US/chrome/common/unix/platformCommunicatorOverlay.dtd
index a25db5da33cb..4881ff369f63 100644
--- a/suite/locales/en-US/chrome/common/unix/platformCommunicatorOverlay.dtd
+++ b/suite/locales/en-US/chrome/common/unix/platformCommunicatorOverlay.dtd
@@ -17,3 +17,7 @@
 <!ENTITY findTypeLinksCmd.key       "'">
 
 <!ENTITY accel.emacs_conflict       "accel,shift">
+
+<!-- Help viewer -->
+<!ENTITY openHelpCmd.label          "Help Contents">
+<!ENTITY openHelpCmd.accesskey      "H">
diff --git a/suite/locales/en-US/chrome/common/win/platformCommunicatorOverlay.dtd b/suite/locales/en-US/chrome/common/win/platformCommunicatorOverlay.dtd
index 7a258d94088d..9ba041b9ab0a 100644
--- a/suite/locales/en-US/chrome/common/win/platformCommunicatorOverlay.dtd
+++ b/suite/locales/en-US/chrome/common/win/platformCommunicatorOverlay.dtd
@@ -17,4 +17,8 @@
 <!ENTITY findTypeTextCmd.key            "/">
 <!ENTITY findTypeLinksCmd.key           "'">
 
-<!ENTITY accel.emacs_conflict       "accel">
+<!ENTITY accel.emacs_conflict           "accel">
+
+<!-- Help viewer -->
+<!ENTITY openHelpCmd.label              "Help Contents">
+<!ENTITY openHelpCmd.accesskey          "H">