A more thorough explanation:

Definition: Writing obligatory refers to a written bond or obligation that is legally binding. It is a formal document that outlines the terms and conditions of an agreement between two parties.

Example: A common example of writing obligatory is a loan agreement. When a person borrows money from a bank, they are required to sign a written agreement that outlines the terms of the loan, including the interest rate, repayment schedule, and consequences for defaulting on the loan.

Explanation: The loan agreement is a form of writing obligatory because it is a legally binding document that outlines the obligations of both the borrower and the lender. If either party fails to fulfill their obligations, they can be held liable for breach of contract.