The document discusses various aspects of free consent in contracts such as coercion, undue influence, misrepresentation, fraud, and mistake. It defines these terms and explains how and when consent is considered not free due to these factors. Consent obtained through coercion, undue influence, fraud or misrepresentation makes the contract voidable at the option of the aggrieved party who can also claim damages in some cases. Mistakes can also vitiate consent if bilateral but not if unilateral unless induced by misrepresentation.