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diff --git a/openpower/sv/mv.swizzle.mdwn b/openpower/sv/mv.swizzle.mdwn
index af8c797a0e0cc51b126910f65d819be7116bd7cd..2d7b3986487282e76d9aaa49c9cf230c46411256 100644 (file)
--- a/openpower/sv/mv.swizzle.mdwn
+++ b/openpower/sv/mv.swizzle.mdwn
@@ -44,7 +44,12 @@ to each:
 |pixel  |R   | G  | B | A  |
 |index  |0   | 1  | 2 | 3  |
 
-the options for each Swizzle are:
+In very simplistic terms the relationship between swizzle indices,
+source, and destination is:
+
+    dest[i] = src[swiz[i]]
+
+The options for each Swizzle are:
 
 * 0b000 to indicate "skip".  this is equivalent to predicate masking
 * 0b001 subvector length end marker (length=4 if not present)