Pedantic documentation errors.

[Toby White]

Looking through the example programs given in the documentation, I notice
that a large number of them contain an error.

Specifically, they nearly all (with one or two honourable exceptions)
have a main() with no return.

I realise this has very little effect on anything, but I thought I'd
mention it anyway.

Toby

-- 
Toby White, University Chemical Lab., Lensfield Road, Cambridge. CB2 1EW. U.K.
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