--- /dev/null
+
+USING: accessors ui L-system ;
+
+IN: L-system.models.abop-6
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: abop-6 ( <L-system> -- <L-system> )
+
+ L-parser-dialect >>commands
+
+ [ 5 >>angle ] >>turtle-values
+
+ ! "&(90)+(90)FFF[-(120)'(.6)x][-(60)'(.8)x][+(120)'(.6)x][+(60)'(.8)x]x"
+ "FFF[-(120)'(.6)x][-(60)'(.8)x][+(120)'(.6)x][+(60)'(.8)x]x"
+ >>axiom
+
+ {
+ { "a" "F[cdx][cex]F!(.9)a" }
+ { "x" "a" }
+
+ { "d" "+d" }
+ { "e" "-e" }
+
+ { "F" "'(1.25)F'(.8)" }
+ }
+ >>rules ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: main ( -- ) [ L-system abop-6 "L-system" open-window ] with-ui ;
+
+MAIN: main
+
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