Announcing

What is announcing?Write its exponents.
ans-We sometimes tell people something, officially, specially about a decision, plans etc.
This is called announcing. In announcing the speaker is supposed to tell something but he can't tell his own ideas. Following are exponents.
                     Please, give me your attention.
                     Attention please.
                     Can i have your attention, please.
                    Here is an announcement from the secretary of home ministry.
                     I would like to make an announcement etc.