IoDesktop version 20050615
Io> Cat := Object clone
==> Object_0x106dc9d8 protos(Object_0x106dc9d8)
Io> Cat says := method("meow" print)
==> method("meow" print)
Io> kitty := Cat clone
==> Object_0x106ddba0 protos(Object_0x106ddba0)
Io> Cat says := method("meow!" print)
==> method("meow!" print)
Io> Cat
==> Object_0x106dc9d8 protos(Object_0x106dc9d8)
  says := Block_0x106de6c8

Io> kitty := Cat clone
==> Object_0x106df2c8 protos(Object_0x106df2c8)

Io> kitty says
meow!
==> meow!
Io>
==> Nil
Io> Cat
==> Object_0x106dc9d8 protos(Object_0x106dc9d8)
  says := Block_0x106de6c8
Io> Cat color := "green"
==> green
Io> Cat
==> Object_0x106dc9d8 protos(Object_0x106dc9d8)
  says := Block_0x106de6c8
  color := "green"
Io> Cat color = "black"
==> black
Io> Cat
==> Object_0x106dc9d8 protos(Object_0x106dc9d8)
  says := Block_0x106de6c8
  color := "black"