In the BankAccount tutorial on the website htttp://squeak.org/documentation
I have a little problem (I use: Squak3.1Alpha #4019)
evaluating:
historyMorph
        | bars m |
        bars _ history collect: [:v | Morph new extent: 5 at v].
        m _ AlignmentMorph newRow  centering: #bottomRight.
        m addAllMorphs: bars.
        ^ m
I got a walkback-window that seems (for me as a newbie) not to understand
centering: #bottomRight. If I cut it out, I got at least a graph, but not
the one I want.