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      I immediately wondered how much of this research on IPE in Xerox inspired ACME, and I would say a lot, given that Cedar and Xerox are cited in this ACME paper.

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        Acme is much more “inspired” by Oberon instead, which itself was inspired by Cedar.

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          Indeed. The paper that @denz linked has a “History and motivation” section that describes the precedent set by Cedar and Oberon and how they inspired Acme.