**Scalar Floating-Point Subset** (SFFS) i.e. is not implementing VMX/VSX,
and with its focus on modern 3D GPU hybrid workloads represents an
important new potential use-case for OpenPOWER.
-With VMX/VSX not available in the SFFS Compliancy Level, the
+
+The progressive development of the Scalar parts of the Power ISA assumed
+that VSX would be there to complement it. However With VMX/VSX
+**not available** in the newly-introduced SFFS Compliancy Level, the
existing non-VSX conversion/data-movement instructions require load/store
instructions (slow and expensive) to transfer data between the FPRs and
the GPRs. Also, because SimpleV needs efficient scalar instructions in