“The Subscription” is an important part of -

There are six parts in a letter. These are -
1. Heading of the letter,
2. Salutation or Greetings,
3. The body of the letter,
4. The subscription,
5. The signature of the writer and
6. The superscription of address.

The subscription = ভদ্রোজনিত বিদায়
Personal Letters এর ক্ষেত্রে - Your frind, Your son etc.
Formal Letters এর ক্ষেত্রে - Yours faithful, Faithfully yours etc.