diff --git a/starmath/inc/types.hxx b/starmath/inc/types.hxx
index ca2bea9..530736b 100644
--- a/starmath/inc/types.hxx
+++ b/starmath/inc/types.hxx
@@ -139,8 +139,10 @@ enum MathSymbol
 
     MS_GRAVE        = (sal_Unicode) 0x0300,
     MS_ACUTE        = (sal_Unicode) 0x0301,
-    MS_HAT          = (sal_Unicode) 0x0302,
-    MS_TILDE        = (sal_Unicode) 0x0303,
+    MS_HAT          = (sal_Unicode) 0x005E,
+    MS_COMBHAT      = (sal_Unicode) 0x0302,
+    MS_TILDE        = (sal_Unicode) 0x007E,
+    MS_COMBTILDE    = (sal_Unicode) 0x0303,
     MS_BAR          = (sal_Unicode) 0x0304,
     MS_BREVE        = (sal_Unicode) 0x0306,
     MS_CIRCLE       = (sal_Unicode) 0x030A,
diff --git a/starmath/source/mathmlexport.cxx b/starmath/source/mathmlexport.cxx
index b2a9b38..8df9d28 100644
--- a/starmath/source/mathmlexport.cxx
+++ b/starmath/source/mathmlexport.cxx
@@ -1121,6 +1121,15 @@ void SmXMLExport::ExportAttributes(const SmNode *pNode, int nLevel)
             break;
         case TOVERSTRIKE:
             break;
+        case TWIDETILDE:
+        case TWIDEHAT:
+        case TWIDEVEC:
+            {
+            // make these wide accents stretchy
+            AddAttribute(XML_NAMESPACE_MATH, XML_STRETCHY, XML_TRUE);
+            ExportNodes(pNode->GetSubNode(0), nLevel+1);
+            }
+            break;
         default:
             ExportNodes(pNode->GetSubNode(0), nLevel+1);
             break;
diff --git a/starmath/source/node.cxx b/starmath/source/node.cxx
index e0c7282..d3ae705 100644
--- a/starmath/source/node.cxx
+++ b/starmath/source/node.cxx
@@ -2820,10 +2820,12 @@ void SmAttributNode::CreateTextFromNode(String &rText)
             case MS_VEC: // COMBINING RIGHT ARROW ABOVE
                 rText += "vec ";
                 break;
-            case MS_TILDE: // COMBINING TILDE
+            case MS_TILDE: // TILDE
+            case MS_COMBTILDE: // COMBINING TILDE
                 rText += "tilde ";
                 break;
-            case MS_HAT: // COMBINING CIRCUMFLEX ACCENT
+            case MS_HAT: // CIRCUMFLEX ACCENT
+            case MS_COMBHAT: // COMBINING CIRCUMFLEX ACCENT
                 rText += "hat ";
                 break;
             case MS_BAR: // COMBINING MACRON
diff --git a/starmath/source/ooxmlimport.cxx b/starmath/source/ooxmlimport.cxx
index a844195..cb355b7 100644
--- a/starmath/source/ooxmlimport.cxx
+++ b/starmath/source/ooxmlimport.cxx
@@ -192,9 +192,11 @@ OUString SmOoxmlImport::handleAcc()
             acc = "widevec";
             break;
         case MS_TILDE:
+        case MS_COMBTILDE:
             acc = "widetilde";
             break;
         case MS_HAT:
+        case MS_COMBHAT:
             acc = "widehat";
             break;
         case MS_DOT: