Compound Events The following table lists the compound events that can be used as triggers. Operations are shown in descending order of precedence. You can use parentheses to alter the evaluation order. For example: ((E[C] or E2) and E3) Event Occurs When E[C] E occurred and condition C is true. E1 and E2 E1 and E2 occurred simultaneously. E1 or E2 E1 or E2, or both, occurred. not E and [C] E did not occur and C is true.
The following table lists the compound events that can be used as triggers. Operations are shown in descending order of precedence. You can use parentheses to alter the evaluation order. For example:
E[C]
E1 and E2
E1 or E2
not E and [C]