add more keywords

diff --git a/openpower/sv/rfc/ls004.mdwn b/openpower/sv/rfc/ls004.mdwn
index e386aa36dca9d3aa5e6b41c72ad2f272948d9565..58f18005071eda2e37b0eabdb4fb6dae5b3a9daa 100644 (file)
--- a/openpower/sv/rfc/ls004.mdwn
+++ b/openpower/sv/rfc/ls004.mdwn
@@ -57,7 +57,7 @@
 **Keywords**:
 
 ```
-    GPR, Bit-manipulation, Shift, Arithmetic
+    GPR, Bit-manipulation, Shift, Arithmetic, Array Indexing
 ```
 
 **Motivation**