I've never been sure whether I was a fan of constrained writing techniques. They always strike me as way more fun to write than they are to read. (In general, of course... largely, the more constrained, the less fun. Unless the writer is dead clever.)
But anyway, today I have just learned about
Oulipo. Via the medium of someone doing a Pulp cover. He doesn't really apply the rules quite as rigorously as he claims, but it's definitely worth a listen:
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