18.Explain about reusable actions?

A.An action that can be called multiple times by the test in which it was created.(local test) as well as by other tests we eant to use the 'call to existing action' option, we
have to make an action as reusable action. for that we have to go for action properties and click the check button. let action1 is a reusable action then we call it to any other action. If we change the script in action1 it is affects in all actions in which we called action1.