The next visual element, indicated by the symbol
![](../help/images/DevApaAppInEveMod_changing_a_rule_s_description.gif)
, is an optional description of the rule’s purpose. You can hide or show rule descriptions by clicking
![](../help/images/DevApaAppInEveMod_minimizing_and_maximizing_a_rule_2.gif)
in the Event Modeler toolbar, or by selecting
Scenario > Toggle Rule Comment Display from the menu.