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From: barr@triples.Math.McGill.CA (Michael Barr)

I am on a committee to consider what the *syntax* for commutative diagrams ought to be in the next implementation of latex. ...

Here is a proposal to replace diagrams by text in linear form. On the other hand, Jon Barwise (visiting Imperial) has just given a lecture on the formal use of diagrams instead of linear text. On the face of it, you might think it natural to combine these ideas and use a diagramatic syntax, not a textual one, for expressing diagrams - based on something like MacDraw, perhaps. But I'm not familiar with the Latex packages, so perhaps I'm thinking about the problem the wrong way. Steve Vickers. p.s. - No point in asking me about Barwise's lecture; I had to miss it.