On the lack of simple examples showing, for example, file IO: I seem to
recall a Perl book (maybe it was Edition 1 of the Camel Book) which had
lots of very short programs each illustrating one typical job.  Also the
Wiki does have some pages of "worked example" programs.  But I agree, we
could do better.

I'm surprised you found the significant whitespace difficult.  Yes, the
formal rules are a bit arcane, but I just read them as "does the Right
Thing", and it generally works for me.  I didn't know about the
significance of comments, but then I've never written an outdented comment.

I had a look through your code, and although I admit I haven't done the
work, I'm sure that there would be ways of factoring out all the
commonality and thereby reducing the length.

Finally, thanks for that little story about the BBC B.  I had one of
those, and I always wondered about that heatsink, and the stonking big
resistor next to it.  They looked out of scale with the rest of the board.

Paul.

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