I do not completely understand the first part of chapter 3 of the Haskell-report.
Concretely I am stumbling about the notation of nonterminals indexed by their precedence
level. This should be a number ranging from 0 to 9. But what about this exp^{10}
production rule?
I would be very appreciated if someone could explain this part in some more detail.
I am trying to introduce a new language construct into this grammar and I want to
insert it at the right place :-)
Ciao, Steffen
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