This document outlines key concepts related to obligations in civil law, including:
1. The different types of obligations such as real (to give) and personal (to do/not do) obligations.
2. The sources and elements of obligations including subject, prestation, efficient cause.
3. Circumstances that affect obligations such as fortuitous events, fraud, negligence, and delay.
4. Characteristics and types of conditions that can affect obligations like suspensive, resolutory, potestative conditions.
5. Rights of creditors against debtors such as demanding payment, attachment of property, and actions to impugn fraudulent acts.