-// cs1570.cs: XML comment on 'T:Testing.EnumTest2' has non-well-formed XML (unmatched closing element: expected summary but found incorrect Line 3, position 12.).
-// Line: 17
+// CS1570: XML documentation comment on `Testing.EnumTest2' is not well-formed XML markup (The 'summary' start tag on line 1 position 2 does not match the end tag of 'incorrect'. Line 3, position 3.)