1 files changed, 5 insertions, 0 deletions
diff --git a/src/tags.h b/src/tags.h
index d0382cc..33676f7 100644
--- a/src/tags.h
+++ b/src/tags.h
@@ -65,9 +65,13 @@ static const char* kElI = "i";
 static const char* kElStrike = "strike";
 static const char* kElU = "u";
 static const char* kElColor = "color";
+static const char* kElSuper = "super";
+static const char* kElSub = "sub";
 static const char* kElCell = "cell";
 static const char* kElRow = "row";
 static const char* kElTable = "table";
+static const char* kElFootNote = "footnote";
+static const char* kElRef = "ref";
 
 static const char* kAtList = "list";
 static const char* kAtName = "name";
@@ -82,6 +86,7 @@ static const char* kAtOrdered = "ordered";
 static const char* kAtStart = "start";
 static const char* kAtId = "id";
 static const char* kAtIndex = "id";
+static const char* kAtFootNote = "footnote";
 
 static const wchar_t* kValDisc = L"disc";
 static const wchar_t* kValLowerAlpha = L"lower-alpha";