change   Section 1.2 starts with " The goal of this Implementation Guide is to define a technical framework for sending unsolicited notifications to the appropriate actors when triggered by an event or request . Sender - the system responsible for sending the notifications, typically operated by the facility or organization where the event occurred " to  Section 1.2 starts with " The goal of this Implementation Guide is to define a technical framework for sending unsolicited notifications to the appropriate actors when triggered by an event or request. Sender - the system responsible for sending the notifications, typically operated by the facility or organization where the event occurred "   Add note to clarify that events include requests or orders (for example: an order test for an infectious disease)