Plain Language Humor: How to Write Good | Plain Language Action & Information Network

The first set of rules was written by Frank L. Visco and originally published in the June 1986 issue of Writers' digest.The second set of rules is derived from William Safire's Rules for Writers, also titled Fumblerules.

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If you like this sort of stuff, also check out Garbl's Word Play Links. And here are other sites about plain language.