\insert 'RAppend.oz' {Explorer.object script(proc {$ S} Z=S in {RAppend [3 4] [5 6] Z} end)} {Explorer.object script(proc {$ S} Y#Z=S in {RAppend [1 2] Y Z} end)} {Explorer.object script(proc {$ S} X#Y#Z=S in {RAppend X Y Z} end)}