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diff --git a/openpower/sv/bitmanip.mdwn b/openpower/sv/bitmanip.mdwn
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--- a/openpower/sv/bitmanip.mdwn
+++ b/openpower/sv/bitmanip.mdwn
@@ -160,7 +160,9 @@ the [[sv/av_opcodes]])
 
 # binary and ternary bitops
 
-Similar to FPGA LUTs: for every bit perform a lookup into a table using an 8bit immediate, or in another register.
+Similar to FPGA LUTs: for every bit perform a lookup into a table using an 8-8-bit immediate (for the ternary instructions), or in another register (4-bit
+for the binary instructions).  The binary lookup instructions have CR Field
+lookup variants due to CR Fields being 4 bit.
 
 Like the x86 AVX512F [vpternlogd/vpternlogq](https://www.felixcloutier.com/x86/vpternlogd:vpternlogq) instructions.