A more thorough explanation:

Rectitudo (rek-tə-t[y]oo-doh) is a term used in Law Latin that refers to a right or legal due, such as a tribute or payment.

Examples of rectitudo include:

• A landlord's right to collect rent from their tenants
• A government's legal due in the form of taxes
• A company's obligation to pay their employees for their work

These examples illustrate how rectitudo refers to a legal obligation or entitlement that must be fulfilled.