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Environment/Versions Spirent iTest. Answer A foreach loop performs the steps within the loop for each value in a specified set of values. The statement in the Description cell (the value of the Command property) of a foreach step follows Tcl foreach syntax and takes an even number of lists and goes through the lists two at a time. The first is a list of variables and the second is the list of values that the variables take on. A foreach loop is composed of all of the steps that are indented under the foreach clause.