> Congratulation for all the beautifful hackpacts, > I'm loving them ! thanks. > What are these (gl )'s on ribbons (day 6) > (gh ) ? it's a logarithmic version of (gh). i tend to use it, because it gives smoother results. it's in my .fluxus.scm: (define (gl n) (log (+ 1 (gh n)))) best, gabor