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diff --git a/openpower/sv/bitmanip.mdwn b/openpower/sv/bitmanip.mdwn
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+++ b/openpower/sv/bitmanip.mdwn
@@ -540,6 +540,13 @@ uint64_t gorc64(uint64_t RA, uint64_t RB)
 }
 
 ```
+# Introductory Explanation for Carry-less and Gallois Field
+
+There are three completely separate types of Galois Field
+arithmetic which are not well explained even in introductory
+literature.
+
+* GF(2) which is covered by bibary XOR
 
 # Instructions for Carry-less Operations aka. Polynomials with coefficients in `GF(2)`