The document discusses rules related to acceptance and communication of offers and acceptances under contract law. It states that for a valid acceptance, acceptance must be absolute and unqualified, expressed in a usual manner, communicated to the offeror, and given within a reasonable time period. It also outlines rules for when an offer or acceptance is considered communicated if sent by post versus communicated in person. Acceptances sent by post bind the offeror once posted, but the acceptor is not bound until the acceptance is received. If an acceptance and revocation are received at the same time, contract formation depends on which is read first. Contracts formed over telephone follow rules for oral contracts, with acceptance needing to be received to form a binding agreement.