If I understood everything well on page 26 my Cell initialize must look like this:

initialize
� � super initialize.
� � self initializeActiveSegments.
� � self initializeExitSides.
� � self leanleft.

The Blankcell initialize must look like this :

initialize
� � super initialize.
� � self initializeExitSides.

And the MirrorCell initialize must look like this :

initialize
� � super initialize
� � self leansLeft: true

Why then I see a message that leanleft is not Understood in Blankcell.
or do I misunderstood that page. I find it a very confusing page.

Roelof