This is aimed at clarifying that a proposal made to the general public (for example, to pay a reward for performing a specified act) may alternatively be analysed as a unilateral promise to pay to the person who satisfied the stipulated conditions and may still be binding on the party making it even though there is no agreement and hence no contract (see para. 24 of the Explanatory Notes)
Section 5 - Revocation of offers
Section 5 lays down rules on when offers can be revoked and "relates to the scenario where an offer has reached the offeree but has not yet been effectively accepted by the offeree" (Explanatory Notes, para. 26...