Patches and discussion for Ensoniq VFX family

I just pulled my VFX-SD out of the closest where it has been hiding
out for the last few years.  The VFX-SD has held up much better than
my brain cells.  Specifically, I have forgotten the key sequence that
will clear the sequence banks so that I can load new sequences from
disk.  I remember that it involved holding down one button while
pressing a second button, but I can't remember which buttons to press.

Can someone remind me of the buttons to press?

Jim