There is no exact pattern.
Different companies will use different formats; a pesonal letter will look different from a request for a refund written to a company. However, most of them will follow a format that goes something like
Address of recipient
Sometimes a subject line
Body of letter
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Hmmm. I would say a simple example of a notice is something like
What do you, the original poster, mean when you say 'a notice'? Can you give us some kind of example, please?
Best wishes, Clive
You are cordially invited to the XYZ club annual meeting. Your presence is requested for the businesses at hand.
Body of the notice
Can you suggest me how to write a disciplinary notice regarding office timimgs n all.
AnonymousI want to give a notice to the crditor of a Proprietor firm for non payment.
Can you write what you would say to the person on the phone?
Then we can help you reformat that into a short note.
People are waiting to help.