Add support for PCIe AER parsing.
diff --git a/sections/cper-section-ipf.h b/sections/cper-section-ipf.h
index 2ba4182..ccd016c 100644
--- a/sections/cper-section-ipf.h
+++ b/sections/cper-section-ipf.h
@@ -38,8 +38,8 @@
     UINT64 ValidBits;
     UINT64 ModCheckInfo;
     UINT64 ModTargetId;
-    UINT64 ModRequestorId; //todo: Which way around are these? Spec has a typo
-    UINT64 ModResponderId;
+    UINT64 ModRequestorId; //NOTE: The Intel Itanium specification contains a typo which makes the order
+    UINT64 ModResponderId; // of these two fields undefined. This is a best guess and could be wrong.
     UINT64 ModPreciseIp;
 } EFI_IPF_MOD_ERROR_INFO;