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A Subscription (ending)
Subscription is the act of signing one's name. In a formal letter, the box numbered 23 is the subscription. A salutation is a greeting. The most common form of salutation in an English letter is Dear followed by the recipient's given name or title.
Date in a formal letter is usually written in left top corner of the page, however sometimes it can be write on the center of the page top.
The sender's address is usually put on the top right-hand corner of the page. The address should be complete and accurate in case the recipient of the letter wishes to get in touch with the sender for further communication.