tooltips from simone (bug #9767)

xpfe/components/prefwindow/resources/locale/en-US/pref-composer.dtd

@@ -9,17 +9,20 @@
 
 <!ENTITY  tableEditing.label                    "Table Editing">
 
-<!ENTITY  maintainTableStructure.label          "Maintain table structure during delete tasks">
+<!ENTITY  maintainTableStructure.label          "Always maintain table layout">
+<!ENTITY  maintainTableStructure.tooltip        "Prevents cell borders from collapsing when you delete one or more cells">
 <!ENTITY  maintainStructure.accesskey           "m">
 <!-- LOCALIZATION NOTE (pressingTheDeleteKey.label): Don't translate "Delete" -->
-<!ENTITY  pressingTheDeleteKey.label            "Pressing the [Delete] key should">
-<!ENTITY  deleteCell.label                      "delete cell (content and structure)">
+<!ENTITY  pressingTheDeleteKey.label            "Use the Delete key to:">
+<!ENTITY  pressingTheDeleteKey.tooltip          "Assign an action to the Delete key for table editing purposes">
+<!ENTITY  deleteCell.label                      "Erase the cell's content and border">
 <!ENTITY  deleteCell.accesskey                  "s">
-<!ENTITY  deleteContent.label                   "delete only cell content">
+<!ENTITY  deleteContent.label                   "Erase the cell's content only">
 <!ENTITY  deleteContent.accesskey               "c">
 
 <!ENTITY  savingFiles.title           "When Saving Files">
-<!ENTITY  preserveExistingFormatting  "Preserve Existing HTML structure **(string to change)">
+<!ENTITY  preserveExistingFormatting  "Retain HTML framework">
+<!ENTITY  preserveExistingFormatting.tooltip    "Preserves line breaks and document's original structure ">
 
 <!ENTITY  saving                    "Saving">
 <!ENTITY  AutoSaveCheck             "Automatically save every">