--- /dev/null
+
+USING: accessors ui L-system ;
+
+IN: L-system.models.abop-1
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: abop-1 ( <L-system> -- <L-system> )
+
+ L-parser-dialect >>commands
+
+ "c(12)FFAL" >>axiom
+
+ {
+ { "A" "F [ & '(.8) ! B L ] >(137) ' !(.9) A" }
+ { "B" "F [ - '(.8) !(.9) $ C L ] ' !(.9) C" }
+ { "C" "F [ + '(.8) !(.9) $ B L ] ' !(.9) B" }
+
+ { "L" " ~ c(8) { +(30) f -(120) f -(120) f }" }
+ }
+ >>rules ;
+
+! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+: main ( -- ) [ L-system abop-1 "L-system" open-window ] with-ui ;
+
+MAIN: main