2. That which obligates or constrains; the binding power of a promise, contract, oath, or vow, or of law; that which constitutes legal or moral duty.

        A tender conscience is a stronger obligation than a proson. --Fuller.

        3. Any act by which a person becomes bound to do something to or for anouther, or to forbear something; external duties imposed by law, promise, or contract, by the relations of society, or by courtesy, kindness, etc.

        Every man has obligations which belong to his station. Duties extend beyond obligation, and direct the affections, desires, and intentions, as well as the actions. --Whewell.

        4. The state of being obligated or bound; the state of being indebted for an act of favor or kindness; as, to place others under obligations to one.

        5. (Law) A bond with a condition annexed, and a penalty for nonfulfillment. In a larger sense, it is an acknowledgment of a duty to pay a certain sum or do a certain things.

 
                                        Source: Webster's Revised Unabridged Dictionary

RULE 3,990. By promoting the works of one thousand Artists before your own, one
thousand Artists are promoting your work before their own.