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  • $\begingroup$ Oh, +1 on the cool-as-*$*% graphics manipulate... I always enjoy your examples! $\endgroup$ Commented Aug 22, 2015 at 6:38
  • $\begingroup$ @ciao thanks...could have done more tersely and general...alas lots to do :) $\endgroup$ Commented Aug 22, 2015 at 6:42