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(2pts) Briefly describe what a lexeme and a token is. (2pts) When can a parse tree be called fully attributed? (2pts) Briefly describe the

(2pts) Briefly describe what a lexeme and a token is. (2pts) When can a parse tree be called fully attributed? (2pts) Briefly describe the two levels of uses of operational semantics. (2pts) In denotational semantics, what are the syntactic and semantic domains? (2pts) What is the weakest precondition? (10pts) Consider the following grammar: | ENDLINE ID "->" |

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