e/Look-ahead (backtracking)

Information
has gloss	eng: In backtracking algorithms, look ahead is the generic term for a subprocedure that attempts to foresee the effects of choosing a branching variable to evaluate or one of its values. The two main aims of look-ahead are to choose a variable to evaluate next and the order of values to assign to it.
lexicalization	eng: look-ahead
instance of	e/Search algorithm