I think we should add another column to this table:
http://developer.postgresql.org/docs/postgres/errcodes-appendix.html
And explicitly list out all the exception names.
I think that would be clearer and easier than having a paragraph they
need to read that says 'just use underscores'...
Also, I wonder if we really need to say 'PostgreSQL8.0.0beta1' on that
page...
Chris