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> Lo these many years I was involved in a project whereby a command
> syntax was documented. I remember that in the planning stage we
> discussed two different alternatives for notation, one was "railroad
> diagramming" (I think), the other was a hyphenated term which I have
> completely forgotten.
Are you thinking of Backus-Nauer form (BNF)? For an example, see
the entry in the Free Online Dictionary of Computing at:
