The implicit actions are implemented by inserting the action script generic_template_expand early in the list of actions to be run in an event and the adjust-services action near the end of the list. You should normally link your action scripts in the range S10 to S80 so that they occur after templates2expand and before services2adjust.
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{{Note box|The generic_template_expand action is currently run at S05 and adjust-services is run at S90.}}