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diff --git a/openpower/sv/twin_butterfly.mdwn b/openpower/sv/twin_butterfly.mdwn
index e06a2899ef8b3758a4260700f23fda626bab564b..5af3c7cb66822507d404701d1235dc6550ef1179 100644 (file)
--- a/openpower/sv/twin_butterfly.mdwn
+++ b/openpower/sv/twin_butterfly.mdwn
@@ -8,9 +8,11 @@
 * [[openpower/isa/svfparith]]
 * [[openpower/isa/svfixedarith]]
 * [[openpower/sv/rfc/ls016]]
-
 <!-- show -->
 
+Although best used with SVP64 REMAP these instructions may be used in a Scalar-only
+context to save considerably on DCT, DFT and FFT processing.  
+
 # Rationale for Twin Butterfly Integer DCT Instruction(s)
 
 The number of general-purpose uses for DCT is huge. The number of