20 | | 1. [# Update a Message] using an existing message |
21 | | 1. [# Cancel a Message] that has been wrongly issued or provided wrong information |
22 | | 1. [# Clear a Message] when the event has subsided to inform the subscribers with an 'All Clear' message |
| 20 | 1. [# Update] a message using an existing message |
| 21 | 1. [# Cancel] a message that has been wrongly issued or provided wrong information |
| 22 | 1. [# Clear] a message when the event has subsided to inform the subscribers with an 'All Clear' message |
| 23 | 1. [# Authorize] a message before issuing, posting or dissemination |