DIRECTION

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Across
  1. 2. Synonym for "alert".
  2. 4. Printed or digital, often seen in schools or public places.
  3. 5. message (DM)
  4. 7. Brief electronic message.
  5. 9. A digital note or reminder.
  6. 10. A public or formal statement.
Down
  1. 1. Public statement giving information about something.
  2. 3. Short reminder note.
  3. 6. Brief communication sent between mobile devices.
  4. 8. Written communication sent in an envelope.