(use-modules (graphgif)
	     (srfi srfi-9 gnu)
	     (ice-9 copy-tree))

(define red (create-color 1 0 0))

(define graph1 (generate-web 10 10))
(define graph2 (remove-rect (copy-tree graph1) 10 3 3 4 5))
(assq-set! graph2 0 (set-node-color (assq-ref graph2 0) red))
(write-graphs-to-file (vector graph1 graph2) "graph.gif")