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#### 6.1.2.10 The for-as-across subclause

In the for-as-across subclause the `for` or `as` construct binds the variable var to the value of each element in the array vector. The loop keyword `across` marks the array vector; `across` is used as a preposition in this syntax. Iteration stops when there are no more elements in the supplied array that can be referenced. Some implementations might recognize a the special form in the vector form to produce more efficient code.